Married First Cousin

Around 1145 Owain "Great" King Gwynedd [aged 45] and Cristin ferch Goronwy Unknown Queen Consort Gwynedd [aged 40] were married. She by marriage Queen Consort Gwynedd. He the son of King Gruffudd ap Cynan of Gwynedd and Angharad Queen Consort Gwynedd [aged 80]. They were first cousins.

Around 1155 Rhys ap Gruffydd "The Lord Rhys" Dinefwr [aged 23] and Gwenllian ferch Madog Mathrafal were married. She the daughter of Madog ap Maredudd Mathrafal Prince Powys and Susanna Aberffraw [aged 18]. He the son of Gruffudd ap Rhys King Deheubarth and Gwenllian Aberffraw Queen Consort Deheubarth. They were first cousins.

In 1191 Alfonso IX King Leon [aged 19] and Theresa of Portugal Queen Consort Leon [aged 15] were married. She by marriage Queen Consort Leon. She the daughter of Sancho "Populator" I King Portugal [aged 36] and Dulce Barcelona Queen Consort Portugal. He the son of Ferdinand II King Leon and Urraca Burgundy Queen Consort Leon [aged 43]. They were first cousins.

On or after 10th November 1347, the date of the marriage contract, James III King of Majorca [aged 32] and Violante of Vilaragut [aged 27] were married. They were first cousins.

On 24th January 1370 Charles King of Naples and Hungary [aged 25] and Margaret of Durazzo [aged 22] were married. She the daughter of Charles Duke Durazzo and Maria Duchess of Durazzo. They were first cousins. He a great x 5 grandson of King Henry "Curtmantle" II of England. She a great x 4 granddaughter of King Henry III of England.

On 2nd October 1380 Gian Galeazzo Visconti 1st Duke Milan [aged 28] and Caterina Visconti Duke Milan [aged 19] were married in the Church of San Giovanni in Conca. They were first cousins.

In 1386 John Valois [aged 23] and Catherine Valois were married. She the daughter of King Charles V of France and Joanna Bourbon Queen Consort France. He the son of John Valois 1st Duke Berry [aged 45] and Joanne Armagnac Duchess Berry [aged 39]. They were first cousins. She a great x 4 granddaughter of King Henry III of England.

In 1389 Louis Valois I Duke Orléans [aged 16] and Valentina Visconti Duchess of Orleans [aged 18] were married. She the daughter of Gian Galeazzo Visconti 1st Duke Milan [aged 37] and Isabelle Valois. He the son of King Charles V of France and Joanna Bourbon Queen Consort France. They were first cousins. He a great x 4 grandson of King Henry III of England.

Before 1394 Fadrique de Castilla Duke of Benavente [aged 33] and Leonor Sánchez de Castilla were married. He the illegitmate son of Henry "Fratricide" II King Castile and Beatriz Ponce de León y Jérica. They were first cousins.

Before 1406 Geoffrey Boleyn [aged 25] and Alice Bracton [aged 20] were married. They were first cousins.

In 1406 Charles Valois Duke Orléans [aged 11] and Isabella Valois Queen Consort England [aged 16] were married at Compiègne, Oise. She by marriage Duchess Orléans. She the daughter of Charles "Beloved Mad" VI King France [aged 37] and Isabeau of Bavaria Queen Consort France [aged 36]. He the son of Louis Valois I Duke Orléans [aged 33] and Valentina Visconti Duchess of Orleans [aged 35]. They were first cousins. He a great x 5 grandson of King Henry III of England. She a great x 5 granddaughter of King Henry III of England.

On 12th June 1415 Alfonso V King Aragon [aged 19] and Maria Trastámara Queen Consort Aragon [aged 13] were married. She by marriage Queen Consort Aragon. She the daughter of Henry III King Castile and Catherine of Lancaster Queen Consort Castile [aged 42]. He the son of Ferdinand I King Aragon [aged 34] and Eleanor of Alberquerque Queen Consort Aragon [aged 41]. They were first cousins. She a great granddaughter of King Edward III of England.

Before 23rd September 1415 Edward Burnell [aged 44] and Elizabeth Pole [aged 25] were married. She the daughter of Michael de la Pole 2nd Earl Suffolk [deceased] and Katherine Stafford Countess Suffolk [aged 39]. They were first cousins. She a great x 4 granddaughter of King Edward I of England.

In 1418 John II King Castile [aged 12] and Maria Trastámara Queen Consort Castile [aged 22] were married. She by marriage Queen Consort Castile. She the daughter of Ferdinand I King Aragon and Eleanor of Alberquerque Queen Consort Aragon [aged 44]. He the son of Henry III King Castile and Catherine of Lancaster Queen Consort Castile [aged 44]. They were first cousins. He a great grandson of King Edward III of England.

In 1418 John Valois IV Duke Brabant [aged 14] and Jacqueline Wittelsbach Duchess Brabant and Gloucester [aged 16] were married. She the daughter of William Wittelsbach IV Count Holland VI Count Hainaut V Count Zeeland and Margaret Valois Countess Holland [aged 43]. He the son of Anthony Valois Duke Brabant and Jeanne Luxembourg Duchess Brabant. They were first cousins. He a great x 3 grandson of King Edward I of England. She a great x 4 granddaughter of King Edward I of England.

In 1422 John Valois IV Duke Brabant [aged 18] and Jacqueline Wittelsbach Duchess Brabant and Gloucester [aged 20] marriage annulled.

In 1440 Henry IV King Castile [aged 14] and Blanche Trastámara II Queen Navarre [aged 16] were married. She the daughter of John II King Aragon [aged 41] and Blanche Évreux Queen Consort Aragon [aged 52]. He the son of John II King Castile [aged 34] and Maria Trastámara Queen Consort Castile [aged 44]. They were first cousins. He a great x 2 grandson of King Edward III of England.

In 1447 Ferdinand Aviz 2nd Duke Viseu [aged 13] and Beatrice Aviz Duchess Viseu [aged 16] were married. He the son of Edward "The Philosopher" I King Portugal and Eleanor Trastámara Queen Consort Portugal. They were first cousins. He a great x 2 grandson of King Edward III of England. She a great x 2 granddaughter of King Edward III of England.

In 1447 Alfonso "The African" V King Portugal [aged 14] and Isabella Aviz Queen Consort Portugal [aged 15] were married. She by marriage Queen Consort Portugal. He the son of Edward "The Philosopher" I King Portugal and Eleanor Trastámara Queen Consort Portugal. They were first cousins. He a great x 2 grandson of King Edward III of England. She a great x 2 granddaughter of King Edward III of England.

On 30th October 1454 Charles "Bold" Valois Duke Burgundy [aged 20] and Isabella Bourbon [aged 18] were married. She the daughter of Charles Bourbon I Duke Bourbon [aged 53] and Agnes Valois Duchess Bourbon [aged 47]. He the son of Philip "Good" Valois III Duke Burgundy [aged 58] and Isabella Aviz Duchess Burgundy [aged 57]. They were first cousins. He a great x 2 grandson of King Edward III of England. She a great x 5 granddaughter of King Edward I of England.

In 1455 Henry IV King Castile [aged 29] and Joan Aviz Queen Consort Castile [aged 15] were married. She by marriage Queen Consort Castile. She the daughter of Edward "The Philosopher" I King Portugal and Eleanor Trastámara Queen Consort Portugal. He the son of John II King Castile and Maria Trastámara Queen Consort Castile. They were first cousins. He a great x 2 grandson of King Edward III of England. She a great x 2 granddaughter of King Edward III of England.

On 20th May 1455 George Gordon 2nd Earl Huntley and Elizabeth Dunbar 5th Countess Moray [aged 30] were married. The difference in their ages was 30 years; she, unusually, being older than him. She the daughter of James Dunbar 4th Earl of Moray and Janet Seton [aged 54]. He the son of Alexander Gordon 1st Earl Huntley [aged 45] and Elizabeth Crichton Countess Huntley [aged 45]. They were first cousins.

Before 1460 John Bagot [aged 23] and Isabella Curzon [aged 23] were married. They were first cousins.

Before March 1460 George Gordon 2nd Earl Huntley [aged 4] and Elizabeth Dunbar 5th Countess Moray [aged 35] marriage annulled due to affinity; they were first cousins once-removed.

Before 30th December 1460 John Harrington [aged 36] and Maud Clifford [aged 18] were married. They were first cousins. She a great x 4 granddaughter of King Edward III of England.

On 6th August 1462 William Beaumont 2nd Viscount Beaumont [aged 24] and Joan Stafford Viscountess Beaumont [aged 20] were married. She by marriage Viscountess Beaumont. She the daughter of Humphrey Stafford 1st Duke of Buckingham and Anne Neville Duchess Buckingham [aged 54]. He the son of John Beaumont 1st Viscount Beaumont and Katherine Neville Duchess Norfolk [aged 62]. They were first cousins. He a great x 2 grandson of King Edward III of England. She a great x 2 granddaughter of King Edward III of England.

In 1470 John II King Portugal [aged 14] and Eleanor Viseu Queen Consort Portugal [aged 11] were married. He the son of Alfonso "The African" V King Portugal [aged 37] and Isabella Aviz Queen Consort Portugal. They were first cousins. He a great x 3 grandson of King Edward III of England. She a great x 3 granddaughter of King Edward III of England.

On 14th September 1476 Ferdinand I King Naples [aged 53] and Joanna of Aragon Queen Consort Naples [aged 22] were married. She by marriage Queen Consort Naples. The difference in their ages was 30 years. She the daughter of John II King Aragon [aged 78] and Juana Enríquez Queen Consort Aragon. He the illegitmate son of Alfonso V King Aragon and Giralda Carlino. They were first cousins.

Before 1477 William Beaumont 2nd Viscount Beaumont [aged 38] and Joan Stafford Viscountess Beaumont [aged 34] were divorced (or the marriage was set aside).

After 1487 William Darcy [aged 27] and Margaret St Lawrence were married. They were first cousins.

In February 1489 Gian Galeazzo Sforza 6th Duke Milan [aged 19] and Isabella Trastámara Duchess Milan [aged 18] were married. She by marriage Duchess Milan. She the daughter of Alfonso II King Naples [aged 40] and Ippolita Maria Sforza. He the son of Galeazzo Maria Sforza 5th Duke Milan and Bona of Savoy [aged 39]. They were first cousins.

In or before 1491 Thomas Kennedy 3rd of Bargany [aged 29] and Katherine Kennedy [aged 20] were married. They were first cousins.

On 8th July 1505 John Stewart 2nd Duke Albany [aged 21] and Anne de la Tour Auvergne Duchess Albany [aged 9] were married. She the daughter of Jean IV Count Auvergne and Jeanne Bourbon Duchess Bourbon [aged 40]. He the son of Alexander Stewart 1st Duke Albany and Anne de la Tour Auvergne Duchess Albany. They were first cousins. He a great x 4 grandson of King Edward III of England.

On 10th February 1525 John III King Portugal [aged 22] and Catherine of Austria Queen Consort Portugal [aged 18] were married. She by marriage Queen Consort Portugal. She the daughter of Philip "Handsome Fair" King Castile and Joanna "The Mad" Trastámara Queen Castile [aged 46]. He the son of Manuel "Fortunate" I King Portugal and Maria Trastámara Queen Consort Portugal. They were first cousins. He a great x 4 grandson of King Edward III of England. She a great x 4 granddaughter of King Edward III of England.

On 10th March 1526 Charles V Holy Roman Emperor [aged 26] and Isabel Aviz Queen Consort Spain [aged 22] were married. She the daughter of Manuel "Fortunate" I King Portugal and Maria Trastámara Queen Consort Portugal. He the son of Philip "Handsome Fair" King Castile and Joanna "The Mad" Trastámara Queen Castile [aged 47]. They were first cousins. He a great x 4 grandson of King Edward III of England. She a great x 4 granddaughter of King Edward III of England.

In 1542 Teodosio I Duke of Braganza [aged 32] and Isabel de Lencastre [aged 28] were married. They were first cousins. He a great x 5 grandson of King Edward III of England. She a great x 5 granddaughter of King Edward III of England.

On 13th September 1548 Maximilian Habsburg Spain II Holy Roman Emperor [aged 21] and Maria of Spain Holy Roman Empress [aged 20] were married. She the daughter of Charles V Holy Roman Emperor [aged 48] and Isabel Aviz Queen Consort Spain. He the son of Ferdinand I Holy Roman Emperor [aged 45] and Anne Jagiellon. They were first cousins. He a great x 5 grandson of King Edward III of England. She a great x 5 granddaughter of King Edward III of England.

On 14th June 1557 Jean Bourbon Count Soissons and Enghien [aged 28] and Marie Bourbon [aged 18] were married. She the daughter of Francis Bourbon Duke Estouteville and Adrienne Estouteville Duchess Estouteville [aged 44]. He the son of Charles Bourbon Duke Vendôme and Françoise Valois Countess Vendôme. They were first cousins.

Before 1562 Richard Butler 1st Viscount Mountgarret [aged 61] and Eleanor Butler Viscountess Mountgarret were married. She by marriage Viscountess Mountgarret. He the son of Piers "Red" Butler 8th Earl Ormonde 1st Earl Ossory and Margaret Fitzgerald Countess Ormonde and Ossory. They were first cousins.

On 29th April 1584 Vincenzo Gonzaga III Duke Mantua [aged 21] and Eleanor de Medici Duchess Mantua [aged 17] were married. He the son of William Gonzaga I Duke Mantua [aged 46] and Eleanor of Austria Duchess Mantua [aged 49]. They were first cousins.

On 6th February 1595 Maximilian "The Great" Wittelsbach I Duke Bavaria I Elector Bavaria [aged 21] and Elisabeth Renata Lorraine Duchess Bavaria [aged 20] were married. She by marriage Duchess Bavaria. She the daughter of Charles "The Great" Lorraine III Duke Lorraine [aged 51] and Claude Valois Duchess Lorraine. He the son of William Wittelsbach V Duke Bavaria [aged 46] and Renata Lorraine Duchess Bavaria [aged 50]. They were first cousins.

On 4th December 1611 Matthias I Holy Roman Emperor [aged 54] and Anna of Austria Holy Roman Empress [aged 26] were married. She by marriage Holy Roman Empress. The difference in their ages was 28 years. He the son of Maximilian Habsburg Spain II Holy Roman Emperor and Maria of Spain Holy Roman Empress. They were first cousins.

On 4th September 1622 Duke Adolphus Frederick I of Mecklenburg-Schwerin [aged 33] and Anna Maria of Ostfriesland [aged 21] were married. They were first cousins.

In 1625 Charles Lorraine II Duke Lorraine [aged 20] and Nicole Lorraine Duchess Lorraine [aged 16] were married. She the daughter of Henry Lorraine II Duke Lorraine and Margherita Gonzaga Duchess Lorraine [aged 33]. He the son of Francis Lorraine II Duke Lorraine [aged 52]. They were first cousins.

On 20th February 1631 Ferdinand III Holy Roman Emperor [aged 22] and Maria Anna of Spain Holy Roman Empress [aged 24] were married. She by marriage Queen Consort Bohemia. She the daughter of Philip III King Spain and Margaret of Austria Queen Consort Spain. He the son of Ferdinand of Spain II Holy Roman Emperor [aged 52] and Maria Anna Wittelsbach Holy Roman Empress. They were first cousins.

Before 1634 Simon Luttrell [aged 33] and Mary Preston [aged 19] were married. They were first cousins.

After 1638 Robert Rich 3rd Earl Warwick [aged 26] and Anne Cheeke Countess Warwick [aged 18] were married. She by marriage Countess Warwick. He the son of Robert Rich 2nd Earl Warwick [aged 50] and Frances Hatton Countess Warwick. They were first cousins.

In May 1640 George Carteret 1st Baronet [aged 30] and Lady Elizabeth Carteret [aged 38] were married. They were first cousins.

In 1641 Henry O'Brien 7th Earl Thomond [aged 21] and Anne O'Brien Countess Thomond were married. She the daughter of Henry O'Brien 5th Earl Thomond and Mary Brereton Countess Thomond. He the son of Barnabas O'Brien 6th Earl Thomond and Anne or Mary Fermor [aged 49]. They were first cousins.

On 24th December 1646 Christoper Wray 4th Baronet [aged 25] and Frances Foljambe Lady Glentworth [aged 19] were married. She by marriage Lady Wray of Glentworth in Lincolnshire. They were first cousins.

In or before 1647 Alexander Elphinstone 6th Lord Elphinstone [aged 44] and Lilias Elphinstone [aged 33] were married. They were first cousins.

In 1647 John Hobart 3rd Baronet [aged 18] and Philippa Hobart [aged 11] were married. They were first cousins. She a great x 5 granddaughter of King Henry VII of England and Ireland.

On 2nd July 1648 Ferdinand III Holy Roman Emperor [aged 39] and Maria Leopoldine Habsburg Spain Queen Consort Bohemia [aged 16] were married at Linz. She by marriage Queen Consort Bohemia. The difference in their ages was 23 years. He the son of Ferdinand of Spain II Holy Roman Emperor and Maria Anna Wittelsbach Holy Roman Empress. They were first cousins.

After 1649 William St Lawrence 12th Baron Howth [aged 21] and Elizabeth St Lawrence Baroness Howth [aged 30] were married. She by marriage Baroness Howth. They were first cousins.

Before 25th December 1650 Philippe Carteret 1st Baronet [aged 30] and Anne Dumaresq Baroness Carteret [aged 23] were married. They were first cousins.

In or before 1651 Major Thomas Cornwall 14th Baron Burford and Anne Reade Baroness Burford were married. They were first cousins.

On 15th June 1651 Ernest Günther Oldenburg I Duke Schleswig Holstein Sonderburg Augustenburg [aged 41] and Auguste Oldenburg Duchess Schleswig Holstein Sonderburg Augustenburg [aged 17] were married. She by marriage Duchess Schleswig Holstein Sonderburg Augustenburg. The difference in their ages was 23 years. He the son of Alexander Oldenburg I Duke Schleswig Holstein Sonderburg and Dorothea Schwarzburg Duchess Schleswig Holstein Sonderburg. They were first cousins.

In 1652 Anthony Cope 4th Baronet [aged 19] and Mary Gerard Lady Cope were married. She by marriage Lady Cope of Hanwell in Oxfordshire. They had four children all of whom appear to have died young. They were first cousins.

Before 30th May 1653 Ferdinand Charles Habsburg Spain [aged 25] and Anna de Medici [aged 36] were married. They were first cousins.

On 30th June 1653 Robert Arbuthnot 1st Viscount Arbuthnott [aged 28] and Catherine Fraser Viscountess Arbuthnot were married. She by marriage Viscountess Arbuthnot. They were first cousins.

After 1659 Charles Northcote and Sarah Northcote were married. They were first cousins.

On 31st March 1661 Philip Bourbon I Duke Orléans [aged 20] and Princess Henrietta Stewart Duchess Orléans [aged 16] were married. She by marriage Duchess Orléans. She the daughter of King Charles I of England, Scotland and Ireland and Henrietta Maria Bourbon Queen Consort England [aged 51]. He the son of Louis XIII King France and Anne of Austria Spain Queen Consort France [aged 59]. They were first cousins.

On 3rd April 1663 Charles Emmanuel II Duke of Savoy [aged 28] and Françoise Madeleine d'Orléans [aged 14] were married. He the son of Victor Amadeus I Duke of Savoy and Christine Marie Bourbon Duchess Savoy [aged 57]. They were first cousins.

Before 21st May 1667 Theophilus Clinton 4th Earl Lincoln [aged 67] and Elizabeth Gorges Countess Lincoln were married. She by marriage Countess Lincoln. He the son of Thomas Clinton 3rd Earl Lincoln and Elizabeth Knyvet Countess Lincoln. They were first cousins.

Before 6th June 1668 Robert Sheffield of Kensington and Mary Fanshawe [aged 32] were married. They were first cousins.

In or before 1673 Thomas Vane and Frances Liddell [aged 13] were married. They were first cousins.

Before 29th March 1674 Charles I Landgrave Hesse-Kassel [aged 19] and Maria Amalia of Courland Landgravine Hesse-Kassel [aged 20] were married. She by marriage Landgravine Hesse Kassel. He the son of Wilhelm "The Just" VI Hesse-Kassel and Hedwig Sophia Hohenzollern [aged 50]. They were first cousins.

In April 1674 William Fiennes 3rd Viscount Saye and Sele [aged 33] and Mary Fiennes [aged 21] were married. They were first cousins.

On 8th October 1674 Charles Hamilton 5th Earl Haddington [aged 24] and Margaret Leslie 8th Countess Rothes and Haddington were married. She by marriage Countess Haddington. She the daughter of John Leslie 1st Duke Rothes [aged 44] and Anne Lindsay Duchess Rothes. He the son of John Hamilton 4th Earl Haddington and Christian Lindsay Countess Haddington. They were first cousins.

Before 1680 Frederick I King Prussia [aged 22] and Elisabeth Henriëtte Hesse-Kassel [aged 18] were married. She the daughter of Wilhelm "The Just" VI Hesse-Kassel and Hedwig Sophia Hohenzollern [aged 56]. He the son of Frederick William "Great Elector" Hohenzollern Elector Brandenburg [aged 59] and Luise Henriette Orange Nassau. They were first cousins.

On 21st November 1682 George Louis of Hanover [aged 22] and Sophia Dorothea of Celle [aged 16] were married. The marriage had been arranged by their respective fathers Ernest Augustus Hanover Elector Brunswick-Lüneburg [aged 53] and George Wilhelm Hanover Duke Brunswick-Lüneburg [aged 58], and his mother Electress Sophia Palatinate Simmern [aged 52]. She the illegitmate daughter of George Wilhelm Hanover Duke Brunswick-Lüneburg and Eleonore Esmier D'Olbreuse Duchess Brunswick-Lüneburg. He the son of Ernest Augustus Hanover Elector Brunswick-Lüneburg and Electress Sophia Palatinate Simmern. They were first cousins. He a great grandson of King James I of England and Ireland and VI of Scotland.

On 1st January 1685 Frederick Louis Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck [aged 31] and Louise Charlotte Oldenburg Duchess Schleswig-Holstein-Sonderburg-Beck [aged 26] were married. She by marriage Duchess Schleswig-Holstein-Sonderburg-Beck. She the daughter of Ernest Günther Oldenburg I Duke Schleswig Holstein Sonderburg Augustenburg [aged 75] and Auguste Oldenburg Duchess Schleswig Holstein Sonderburg Augustenburg [aged 51]. He the son of August Philipp Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck and Marie Sibylle Nassau Saarbrücken Duchess Schleswig-Holstein-Sonderburg-Beck. They were first cousins.

In June 1685 William Kerr 2nd Marquess Lothian [aged 24] and Jean Campbell Marchioness Lothian were married. She the daughter of Archibald Campbell 9th Earl Argyll [aged 56] and Mary Stewart Countess Argyll. He the son of Robert Kerr 1st Marquess Lothian [aged 49] and Jean Campbell. They were first cousins.

After 30th August 1688 William Tracy 4th Viscount Tracy [aged 31] and Jane Leigh Viscountess Tracy [aged 23] were married. They were first cousins.

On 1st March 1690 John Holles 1st Duke Newcastle upon Tyne [aged 28] and Margaret Cavendish Duchess Newcastle upon Tyne [aged 28] were married. She by marriage Countess Clare. She the daughter of Henry Cavendish 2nd Duke Newcastle upon Tyne [aged 59] and Frances Pierrepont Duchess Newcastle upon Tyne [aged 59]. He the son of Gilbert Holles 3rd Earl de Clare and Grace Pierrepont Countess de Clare [aged 57]. They were first cousins.

In November 1691 Edward Russell 1st Earl Orford [aged 38] and Margaret Russell Countess Orford [aged 35] were married. She by marriage Countess Orford. She the daughter of William Russell 1st Duke Bedford [aged 75] and Anne Carr Countess of Bedford. They were first cousins.

On 18th February 1692 Philippe Bourbon II Duke Orléans [aged 17] and Françoise Marie Bourbon Duchess Orléans [aged 15] were married at Palace of Versailles, Versailles. She by marriage Duchess Orléans. She the illegitmate daughter of Louis "Sun King" XIV King France [aged 53] and Françoise Athénaïs Marquise Montespan [aged 51]. He the son of Philip Bourbon I Duke Orléans [aged 51] and Elizabeth Charlotte Palatinate Simmern Duchess Orléans [aged 39]. They were first cousins. He a great x 2 grandson of King James I of England and Ireland and VI of Scotland.

On 28th December 1694 the marriage of the future King George I [aged 34] and Sophia Dorothea of Celle [aged 28] was dissolved. Sophia Dorothea was named as the guilty party for "maliciously leaving her husband". She was forbidden to remarry or to see her children again; her name was removed from official documents, she was stripped of her title of Electoral Princess. She was imprisoned for life.

In or before 1695 Thomas Foley [aged 24] and Anne Knightley [aged 24] were married. They were first cousins.

In 1696 Thomas Hamilton 6th Earl Haddington [aged 15] and Helen Hope Countess Haddington [aged 18] were married. She by marriage Countess Haddington. He the son of Charles Hamilton 5th Earl Haddington and Margaret Leslie 8th Countess Rothes and Haddington. They were first cousins.

On 12th January 1697 Henry Nassau 1st Earl Grantham [aged 24] and Henrietta Butler Countess Grantham were married. She the daughter of Thomas Butler 6th Earl Ossory and Emilia Nassau Beverweert Countess Ossory. They were first cousins.

Around 1st August 1697 Robert Constable 3rd Viscount Dunbar [aged 46] and Dorothy Brudenell Viscountess Dunbar [aged 54] were married. She by marriage Viscountess Dunbar. She the daughter of Robert Brudenell 2nd Earl Cardigan [aged 90] and Anna Savage Countess Cardigan. They were first cousins.

Before 1699 Colonel William Dalrymple Earl Dumfries [aged 25] and Penelope Crichton 4th Countess of Dumfries were married. He the son of John Dalrymple 1st Earl of Stair [aged 50]. They were first cousins.

In 1700 Frederick I King Sweden [aged 23] and Louise Dorothea Hohenzollern [aged 19] were married. She the daughter of Frederick I King Prussia [aged 42] and Elisabeth Henriëtte Hesse-Kassel. He the son of Charles I Landgrave Hesse-Kassel [aged 45] and Maria Amalia of Courland Landgravine Hesse-Kassel [aged 46]. They were first cousins.

Around 1700 Edward Phelips [aged 22] and Anne Phelips [aged 12] were married. He would, twenty years later, marry her sister Elizabeth Phelips; an example of Married to Two Siblings. They were first cousins.

On 6th January 1702 Arthur Annesley 5th Earl Anglesey [aged 22] and Mary Thompson Countess Anglesey were married. He the son of James Annesley 2nd Earl Anglesey and Elizabeth Manners Countess Anglesey. They were first cousins.

In July 1704 Allen Bathurst 1st Earl Bathurst [aged 19] and Catherine Apsley Countess Bathurst Sussex were married. They were first cousins.

In or before 1706 Thomas Trevor 1st Baron Trevor Bromham [aged 47] and Anne Welden [aged 35] were married. They were first cousins.

On 28th November 1706 Frederick William "Soldier King" I King Prussia [aged 18] and Sophia Dorothea Hanover Queen Consort Prussia [aged 19] were married. She the daughter of King George I [aged 46] and Sophia Dorothea of Celle [aged 40]. He the son of Frederick I King Prussia [aged 49] and Sophia Charlotte Hanover Queen Consort Prussia. They were first cousins. He a great x 2 grandson of King James I of England and Ireland and VI of Scotland. She a great x 2 granddaughter of King James I of England and Ireland and VI of Scotland.

Before 1708 Baptist Noel 3rd Earl Gainsborough [aged 23] and Dorothy Manners Countess Gainsborough [aged 17] were married. She by marriage Countess Gainsborough. She the daughter of John Manners 1st Duke Rutland [aged 69] and Catherine Noel Duchess Rutland [aged 50]. They were first cousins.

In 1709 William Margrave of Brandenburg-Ansbach [aged 22] and Christiane of Württemberg [aged 14] were married. They were first cousins.

On 5th March 1709 Henry Bowes Howard 4th Earl Berkshire 11th Earl Suffolk [aged 23] and Catherine Graham Countess Berkshire and Suffolk were married. They were first cousins.

In or before 1710 Thomas Gage and Delariviere D'Ewes were married. They were first cousins.

In 1710 George Downing 3rd Baronet [aged 24] and Mary Forester Lady Downing [aged 25] were married. They were first cousins.

Before 5th October 1711 Andrew St John 4th Baronet [aged 26] and Anne James were married. They were first cousins.

In 1712 John Brownlow 1st Viscount Tyconnel [aged 21] and Eleanor Brownlow Viscountess Tyconnel [aged 21] were married. She by marriage Lady Brownlow of Humby in Lincolnshire. They were first cousins.

In 1712 Maurice Thompson 2nd Baron Haversham [aged 37] and Elizabeth Annesley were married. They were first cousins.

On 9th July 1713 Louis Henri Bourbon Condé Duke Bourbon [aged 20] and Marie Anne Bourbon Condé Conti [aged 24] were married. They were first cousins. He a great x 3 grandson of King James I of England and Ireland and VI of Scotland. She a great x 3 granddaughter of King James I of England and Ireland and VI of Scotland.

Before 7th January 1714 Bourchier Wrey 5th Baronet [aged 32] and Diana Rolle [aged 31] were married. They were first cousins.

In or before 1715 Willem Maurits van Nassau [aged 35] and Charlotte van Nassau Odijk [aged 37] were married. They were first cousins.

On 17th July 1716 Harry Trelawny 5th Baronet [aged 29] and Letitia Trelawny were married. She the elder sister of John Trelawny 4th Baronet [aged 24]. They had been courting for many years before her father Bishop Jonathan Trelawny 3rd Baronet [aged 66] consented to their marriage. They had a son, who predeceased him, and three daughters, one of whom, Laetitia, also married a cousin. She the daughter of Bishop Jonathan Trelawny 3rd Baronet and Rebecca Hele Lady Trelawny. They were first cousins.

In or before 1718 William Stafford-Howard 2nd Earl Stafford [aged 27] and Anne Holman Countess Stafford were married. They were first cousins.

Around 1720 Edward Phelips [aged 42] and Elizabeth Phelips were married. She the sister of his first wife Anne Phelips; an example of Married to Two Siblings and both of whom were his first cousin. They were first cousins.

On 29th March 1720 William O'Brien 4th Earl Inchiquin [aged 20] and Anne Hamilton 2nd Countess Orkney and Inchiquin were married. She by marriage Countess Inchiquin. She the daughter of George Hamilton 1st Earl Orkney [aged 54] and Elizabeth Villiers Countess Orkney [aged 63]. He the son of William O'Brien 3rd Earl Inchiquin and Mary Villiers Countess Inchiquin. They were first cousins.

Before 14th March 1722 James Butler [aged 51] and Eleanor Loftus were married. His second marriage. There was no issue. They were first cousins.

On 30th July 1728 Francis Seymour [aged 31] and Elizabeth Popham Viscountess Hinchingbrooke [aged 35] were married. They were first cousins.

On 29th September 1729 Walter Calverley aka Blackett 2nd Baronet [aged 21] and Elizabeth Orde Lady Blackett were married. They were first cousins.

Before 1730 Francis Lee [aged 34] and Elizabeth Lee [aged 36] were married. She the daughter of Edward Lee 1st Earl Lichfield and Charlotte Fitzroy Countess Lichfield. They were first cousins. She a granddaughter of King Charles II of England Scotland and Ireland.

Before 6th August 1730 Bishop Thomas Vesey 1st Baronet [aged 62] and Mary Muschamp [aged 55] were married. They were first cousins.

On 27th June 1731 William Maxwell 6th Earl Nithsdale and Catherine Stewart [aged 26] were married. She the daughter of Charles Stewart 4th Earl Traquair [aged 72] and Mary Maxwell Countess Traquair [aged 60]. He the son of William Maxwell 5th Earl Nithsale and Winifred Herbert Countess Nithsdale [aged 51]. They were first cousins.

On 17th August 1732 John Evelyn 2nd Baronet [aged 25] and Mary Boscawen [aged 26] were married. They were first cousins.

On 1st July 1738 Coventry Carew 6th Baronet [aged 21] and Mary Bampfylde Lady Carew were married at Church of St George the Martyr, Queen Square. They were first cousins.

On 5th September 1738 John Tempest of Sherburne Durham [aged 28] and Frances Shuttleworth were married. They were first cousins.

On 17th October 1744 Henry Fiennes Pelham-Clinton 2nd Duke Newcastle-under-Lyne [aged 24] and Catherine Pelham Countess of Lincoln [aged 17] were married. She by marriage Countess Lincoln. He the son of Henry Clinton 7th Earl Lincoln and Lucy Pelham Countess Lincoln. They were first cousins.

In 1748 Theophilus Biddulph 4th Baronet [aged 28] and Jane Biddulph Lady Biddulph [aged 20] were married. She by marriage Lady Biddulph of Westcombe in Kent. They were first cousins.

On 8th September 1748 Vice Admiral John "Foulweather Jack" Byron [aged 24] and Sophia Trevannion [aged 19] were married. They were first cousins.

On 21st November 1748 Bishop John Egerton [aged 26] and Anne Sophia Grey [aged 18] were married. She the daughter of Henry Grey 1st Duke Kent and Sophia Bentinck Duchess Kent. He the son of Bishop Henry Egerton and Elizabeth Adriana Bentinck [aged 45]. They were first cousins.

In 1749 Thomas Parker 3rd Earl Macclesfield [aged 25] and Mary Heathcote Countess Macclesfield were married. He the son of George Parker 2nd Earl Macclesfield [aged 53]. They were first cousins.

In 1749 James Stuart Mackenzie [aged 26] and Elizabeth Campbell were married. She the daughter of John Campbell 2nd Duke Argyll and Jane Warburton Duchess of Argyll. He the son of James Stuart 2nd Earl Bute and Anne Campbell Countess Bute. They were first cousins.

In 1753 Murrough O'Brien 1st Marquess Thomond [aged 27] and Mary O'Brien 3rd Countess Orkney and Inchquin [aged 32] were married. She the daughter of William O'Brien 4th Earl Inchiquin [aged 53] and Anne Hamilton 2nd Countess Orkney and Inchiquin. They were first cousins.

On 23rd October 1753 John Murray 3rd Duke Atholl [aged 24] and Charlotte Murray Duchess Atholl [aged 22] were married. She the daughter of James Murray 2nd Duke Atholl [aged 63] and Jane Frederick Duchess Atholl. They were first cousins.

On 25th June 1754 William Trelawny 6th Baronet [aged 32] and Laetitia Trelawny [aged 26] were married at Maker, Cornwall. They had a son and a daughter. They were first cousins.

In or before 1755 John Delaval 1st Baron Delaval [aged 26] and Susanna Robinson Baroness Delaval [aged 24] were married. They were first cousins.

Before 1758 Richard Hoare 1st Baronet [aged 22] and Anne Hoare [aged 20] were married. They were first cousins.

On 24th June 1758 Richard Temple 7th Baronet [aged 27] and Anne Sophia Temple were married. They were first cousins.

On 27th November 1758 Colonel Clement Wolseley [aged 28] and Catherine St George [aged 26] were married. They were first cousins.

Before 1760 William Edwardes 1st Baron Kensington [aged 48] and Rachel Edwardes [aged 36] were married. They were first cousins.

On 22nd July 1762 John Molesworth 5th Baronet [aged 33] and Barbara St Aubyn [aged 32] were married. They were first cousins.

On 1st September 1764 William Elector of Hesse [aged 21] and Electress Wilhelmina Caroline Oldenburg [aged 17] were married at Christiansborg Castle. She the daughter of Frederick V King of Denmark and Norway [aged 41] and Louise Hanover Queen Consort Denmark and Norway. He the son of Frederick Hesse-Kassel [aged 44] and Mary Hanover [aged 41]. They were first cousins. He a grandson of King George II of Great Britain and Ireland. She a granddaughter of King George II of Great Britain and Ireland.

In 1765 Charles IV King Spain [aged 16] and Maria Luisa of Parma [aged 13] were married. He the son of Charles III King Spain [aged 48] and Maria Amalia of Saxony Queen Consort Spain. They were first cousins. He a great x 5 grandson of King James I of England and Ireland and VI of Scotland. She a great x 4 granddaughter of King Charles I of England, Scotland and Ireland.

On 26th September 1765 George Harcourt 2nd Earl Harcourt [aged 29] and Elizabeth Venables-Vernon Countess Harcourt [aged 19] were married. He the son of Simon Harcourt 1st Earl Harcourt [aged 51] and Rebecca Samborne Le Bass. They were first cousins.

On 5th October 1765 Charles Bagot aka Chester [aged 35] and Catherine Legge [aged 24] were married. They were first cousins.

Before 11th July 1766 Philip Egerton of Oulton [aged 28] and Mary Eyles-Styles [aged 21] were married. They were first cousins.

On 30th August 1766 Charles Hesse-Kassel [aged 21] and Louise Oldenburg [aged 16] were married at Christiansborg Castle. She the daughter of Frederick V King of Denmark and Norway and Louise Hanover Queen Consort Denmark and Norway. He the son of Frederick Hesse-Kassel [aged 46] and Mary Hanover [aged 43]. They were first cousins. He a grandson of King George II of Great Britain and Ireland. She a granddaughter of King George II of Great Britain and Ireland.

On 8th November 1766 Christian VII King of Denmark and Norway [aged 17] and Caroline Matilda Hanover Queen Consort Denmark and Norway [aged 15] were married at Christiansborg Castle. She by marriage Queen Consort Denmark and Norway. She the daughter of Frederick Louis Hanover Prince of Wales and Augusta Saxe Coburg Altenburg [aged 46]. He the son of Frederick V King of Denmark and Norway and Louise Hanover Queen Consort Denmark and Norway. They were first cousins. He a grandson of King George II of Great Britain and Ireland. She a granddaughter of King George II of Great Britain and Ireland.

On 16th December 1769 General George Hotham [aged 28] and Diana Pennyman were married. They were first cousins.

On 1st October 1771 Colonel Stephen Digby [aged 29] and Lucy Fox-Strangways [aged 22] were married. She the daughter of Stephen Fox-Strangways 1st Earl of Ilchester [aged 67] and Elizabeth Strangways-Horner Countess Ilchester [aged 49]. They were first cousins.

On 27th January 1776 Nigel Bowyer Gresley 7th Baronet [aged 23] and Wilmot Gresley were married by which he acquired Drakelow Hall, Derbyshire. They were first cousins.

Before 22nd June 1776 William Byron [aged 26] and Juliana Elizabeth Byron were married having eloped to Gretna Green, Dumfrieshire. They were first cousins.

On 14th August 1777 Henry Howard 12th Earl Suffolk 5th Earl Berkshire [aged 38] and Charlotte Finch Countess Suffolk and Berkshire [aged 23] were married. She by marriage Countess Suffolk, Countess Berkshire. She the daughter of Heneage Finch 3rd Earl Aylesford and Charlotte Seymour Countess Aylesford [aged 46]. They were first cousins.

In 1778 Other Windsor 5th Earl Plymouth [aged 26] and Sarah Archer Countess Plymouth and Amherst [aged 16] were married. She by marriage Countess Plymouth. He the son of Other Lewis Windsor 4th Earl Plymouth and Catherine Archer Countess Plymouth [aged 41]. They were first cousins.

On 1st June 1780 Alexander Lindsay 6th Earl Balcarres 23rd Earl Crawford [aged 28] and Elizabeth Bradshaigh Dalrymple Countess Balcarres were married. She by marriage Countess Balcarres. They had five children He the son of James Lindsay 5th Earl Balcarres and Anne Dalrymple Countess Balcarres [aged 53]. They were first cousins.

On 5th May 1782 George Waldegrave 4th Earl Waldegrave [aged 30] and Elizabeth Laura Waldegrave Countess Waldegrave [aged 22] were married. She the daughter of James Waldegrave 2nd Earl Waldegrave and Maria Walpole Duchess Gloucester and Edinburgh [aged 45]. He the son of John Waldegrave 3rd Earl Waldegrave [aged 64] and Elizabeth Leveson-Gower Countess Waldegrave [aged 58]. They were first cousins. He a great x 2 grandson of King James II of England Scotland and Ireland. She a great x 2 granddaughter of King James II of England Scotland and Ireland.

On 25th January 1783 John Evans 6th Baron Carbery [aged 17] and Catherine Charlotte Gore Baroness Carbery [aged 16] were married. She the daughter of Arthur Saunders Gore 2nd Earl Arran [aged 48] and Catherine Annesley. They were first cousins.

On 26th May 1783 John Aubrey 6th Baronet [aged 43] and Martha Catherine Carter [aged 18] were married. The difference in their ages was 25 years. They were first cousins.

1st November 1784 1st November 1784 Edward Nightingale 10th Baronet [aged 24] and Eleanor Nightingale Lady Nightingale were married at, firstly, Gretna Green, Dumfrieshire, and secondly, The Parish Church of St Peter and St Paul, Bassingbourn [Map]. They were first cousins.

On 8th April 1787 George Augustus Herbert 11th Earl Pembroke 8th Earl Montgomery [aged 27] and Elisabeth Beauclerk [aged 20] were married. He the son of Henry Herbert 10th Earl Pembroke 7th Earl Montgomery [aged 52] and Elizabeth Spencer Countess Pembroke and Montgomery [aged 50]. They were first cousins. She a great x 2 granddaughter of King Charles II of England Scotland and Ireland.

On 17th September 1787 William Henry Vane 1st Duke Cleveland [aged 21] and Catharine Margaret Powlett Countess Darlington [aged 21] were married at her father's seat Hackwood Park, Hampshire. She the daughter of Harry Powlett 6th Duke Bolton [aged 66] and Katherine Lowther Duchess of Bolton [aged 51]. He the son of Henry Vane 2nd Earl Darlington [aged 60] and Margaret Lowther Countess Darlington [aged 59]. They were first cousins. He a great x 2 grandson of King Charles II of England Scotland and Ireland.

On 18th June 1790 Reverend John Molesworth [aged 26] and Catherine St Aubyn were married. They were first cousins.

On 31st July 1790 Frederick VI King of Denmark and Norway [aged 22] and Marie Sophie Hesse-Kassel Queen Consort Denmark and Norway [aged 22] were married. He the son of Christian VII King of Denmark and Norway [aged 41] and Caroline Matilda Hanover Queen Consort Denmark and Norway. They were first cousins. He a great grandson of King George II of Great Britain and Ireland. She a great granddaughter of King George II of Great Britain and Ireland.

On 5th January 1791 John Villiers 3rd Earl Clarendon [aged 33] and Maria Forbes Countess Clarendon [aged 29] were married. He the son of Thomas Villiers 1st Earl Clarendon and Charlotte Capell Countess Clarendon. They were first cousins.

On 4th March 1792 John Hamilton 1st Marquess Abercorn [aged 35] and Cecil Hamilton [aged 21] were married. She by marriage Marchioness Abercorn. They were divorced in April 1799. She married the Joseph Copley 3rd Baronet [aged 22] the following month; he being the brother of the Marquess' first wife Catherine Moyle Marchioness Abercorn. They were first cousins.

In January 1794 Clotworthy Taylour aka Rowley 1st Baron Langford [aged 30] and Frances Rowley Baroness Langford [aged 19] were married. He the son of Thomas Taylour 1st Earl of Bective [aged 69] and Jane Rowley Countess of Bective [aged 60]. They were first cousins.

On 8th April 1795 King George IV of Great Britain and Ireland [aged 32] and Caroline of Brunswick Queen Consort England [aged 26] were married at Chapel Royal, St James's Palace. He the son of King George III of Great Britain and Ireland [aged 56] and Charlotte Mecklenburg Strelitz Queen Consort England [aged 50]. They were first cousins. She a great granddaughter of King George II of Great Britain and Ireland.

In or before 1797 Very Reverend William John Digby [aged 66] and Mary Digby were married. They were first cousins.

In 1798 John Hope 4th Earl Hopetoun [aged 32] and Elizabeth Vere Hope were married. He the son of John Hope 2nd Earl Hopetoun and Jane Oliphant Countess Hopetoun. They were first cousins.

On 10th June 1799 Duke Louis Antoine of Angoulême [aged 23] and Duchess Marie-Thérèse Duchess of Angoulême [aged 20] were married. She the daughter of Louis XVI King France and Queen Marie Antoinette of France. He the son of King Charles X of France [aged 41] and Maria Teresa of Savoy [aged 43]. They were first cousins. He a great x 4 grandson of King Charles I of England, Scotland and Ireland. She a great x 5 granddaughter of King Charles I of England, Scotland and Ireland.

On 20th October 1800 Somerset Lowry-Corry 2nd Earl Belmore [aged 26] and Juliana Butler Countess Belmore [aged 17] were married. He the son of Armar Lowry-Corry 1st Earl Belmore [aged 60] and Margaret Butler. They were first cousins.

On 24th November 1800 Mathew Wilson of Eshton Hall [aged 28] and Margaret Clive Wilson [aged 36] were married. They were first cousins.

On 27th August 1801 Edmund Bacon 10th and 9th Baronet [aged 22] and Mary Anne Elizabeth Bacon [aged 23] were married. They were first cousins.

In 1803 George Murray 5th Earl Dunmore [aged 40] and Susan Hamilton Countess Dunmore [aged 29] were married. She the daughter of Archibald Hamilton 9th Duke Hamilton 6th Duke Brandon [aged 62] and Harriet Stewart. He the son of John Murray 4th Earl Dunmore [aged 73] and Charlotte Stewart Countess Dunmore [aged 73]. They were first cousins.

In 1803 Reverend William Digby [aged 28] and Charlotte Elizabeth Digby were married. They were first cousins.

On 19th June 1804 Louis Hesse Darmstadt II Grand Duke [aged 26] and Princess Wilhelmine Baden [aged 15] were married. She by marriage Grand Duchess of Hesse and by Rhine. They were first cousins.

On 22nd November 1804 Henry James Montagu Scott 2nd Baron Montagu [aged 27] and Jane Margaret Douglas Baroness Montagu [aged 25] were married. She by marriage Baroness Montagu of Boughton in Northamptonshire. He the son of Henry Scott 3rd Duke Buccleuch [aged 58] and Elizabeth Montagu Duchess Buccleuch [aged 61]. They were first cousins. He a great x 4 grandson of King Charles II of England Scotland and Ireland. She a great x 4 granddaughter of King Charles II of England Scotland and Ireland.

On 21st June 1806 King Christian I of Norway and VIII of Denmark [aged 19] and Duchess Charlotte Frederica of Mecklenburg-Schwerin [aged 21] were married. They were first cousins.

Before 1807 Charles Wentworth-Fitzwilliam 5th and 3rd Earl Fitzwilliam [aged 20] and Mary Dundas [aged 19] were married. He the son of William Fitzwilliam 4th and 2nd Earl Fitzwilliam [aged 58] and Charlotte Ponsonby Countess Fitzwilliam. They were first cousins.

On 6th January 1808 Francis Lorraine II Holy Roman Emperor [aged 39] and Maria Ludovika of Austria-Este [aged 20] were married. They were first cousins. He a great x 5 grandson of King James I of England and Ireland and VI of Scotland. She a great x 5 granddaughter of King James I of England and Ireland and VI of Scotland.

On 23rd June 1808 Arthur John Henry Somerset [aged 28] and Elizabeth Bocawen were married. He the son of Henry Somerset 5th Duke Beaufort and Elizabeth Boscawen Duchess Beaufort [aged 61]. They were first cousins.

On 16th August 1808 Richard Edensor Heathcote [aged 28] and Emma Gresley [aged 23] were married. They were first cousins.

On 21st October 1809 Booth Grey [aged 26] and Sophia Grey [aged 32] were married. She the daughter of George Grey 5th Earl Stamford 1st Earl Warrington [aged 72] and Henrietta Bentinck Countess Stamford and Warrington [aged 72]. They were first cousins.

On 4th December 1809 Richard Brooke 6th Baronet [aged 24] and Harriet Cunliffe Lady Brooke were married. She by marriage Lady Brooke of Norton Priory in Cheshire. They were first cousins.

In 1810 King Christian I of Norway and VIII of Denmark [aged 23] and Duchess Charlotte Frederica of Mecklenburg-Schwerin [aged 25] were divorced after her alleged affair with her singing teacher Édouard Du Puy. She was exiled; she never saw her one year old son again.

On 4th July 1811 Lieutenant-General William Fitzroy [aged 37] and Elizabeth Fitzroy were married. She the daughter of Augustus Henry Fitzroy 3rd Duke Grafton and Elizabeth Wrottesley Duchess Grafton [aged 65]. They were first cousins. He a great x 3 grandson of King Charles II of England Scotland and Ireland. She a great x 3 granddaughter of King Charles II of England Scotland and Ireland.

On 4th July 1811 William Fitzroy [aged 37] and Elizabeth Fitzroy [aged 25] were married. She the daughter of Augustus Henry Fitzroy 3rd Duke Grafton and Elizabeth Wrottesley Duchess Grafton [aged 65]. They were first cousins. He a great x 3 grandson of King Charles II of England Scotland and Ireland. She a great x 3 granddaughter of King Charles II of England Scotland and Ireland.

On 15th September 1812 John Leslie-Melville 9th Earl of Leven 8th Earl Melville [aged 25] and Harriet Thornton [aged 21] were married. He the son of Alexander Leslie-Melville 7th Earl of Leven 6th Earl of Melville [aged 62] and Jane Thornton [aged 55]. They were first cousins.

In or before 1813 William Cunnington [aged 21] and Elizabeth Cunnington were married. She the daughter of William Cunnington and Mary Meares. They were first cousins.

On 17th February 1813 Frederick Collings Lukis [aged 24] and Elizabeth Collings [aged 21] were married. They had three daughters and six sons. They were first cousins.

On 2nd June 1814 Lieutentnant-Colonel John Horace Thomas Stapleton [aged 15] and Georgiana Maria Fitzroy [aged 29] were married. They were first cousins. He a great x 3 grandson of King Charles II of England Scotland and Ireland. She a great x 3 granddaughter of King Charles II of England Scotland and Ireland.

On 29th June 1814 John James and Emily Jane Stewart Viscountess Hardinge [aged 25] were married. She the daughter of Robert Stewart 1st Marquess Londonderry [aged 74] and Frances Pratt Marchioness Londonderry [aged 63]. They were first cousins.

In 1815 Ernest Augustus King Hanover [aged 43] and Frederica Mecklenburg Strelitz Queen Consort Hanover [aged 36] were married. She by marriage Duchess Cumberland and Teviotdale. He the son of King George III of Great Britain and Ireland [aged 76] and Charlotte Mecklenburg Strelitz Queen Consort England [aged 70]. They were first cousins.

Before 8th February 1815 John Henry Smyth [aged 34] and Elizabeth Anne Fitzroy [aged 27] were married. She the daughter of George Henry Fitzroy 4th Duke Grafton [aged 55] and Charlotte Maria Waldegrave. They were first cousins. He a great x 4 grandson of King Charles II of England Scotland and Ireland. She a great x 3 granddaughter of King James II of England Scotland and Ireland.

On 9th December 1815 Lawrence Palk 3rd Baronet [aged 22] and Anna Eleanora Wrey Lady Palk [aged 25] were married. She by marriage Lady Palk of Haldon House in Devon. They were first cousins.

On 22nd July 1816 William Frederick Hanover 2nd Duke Gloucester and Edinburgh [aged 40] and Mary Hanover Duchess Gloucester and Edinburgh [aged 40] were married at St James's Palace [Map]. She by marriage Duchess Gloucester and Edinburgh. She the daughter of King George III of Great Britain and Ireland [aged 78] and Charlotte Mecklenburg Strelitz Queen Consort England [aged 72]. He the son of William Henry Hanover 1st Duke Gloucester and Edinburgh and Maria Walpole Duchess Gloucester and Edinburgh. They were first cousins. He a great grandson of King George II of Great Britain and Ireland.

On 13th January 1819 George Spencer-Churchill 6th Duke of Marlborough [aged 25] and Jane Stewart Duchess of Marlborough [aged 21] were married. She the daughter of George Stewart 8th Earl Galloway [aged 50] and Jane Paget Countess Galloway [aged 44]. He the son of George Spencer-Churchill 5th Duke of Marlborough [aged 52] and Susan Stewart Duchess of Marlborough [aged 51]. They were first cousins.

On 22nd July 1819 Henry Duncan Twysden [aged 24] and Mary Twysden were married. They were first cousins.

On 20th March 1821 Edward Perceval [aged 25] and Jane Perceval [aged 20] were married. They were first cousins.

In 1822 Vice-Admiral Jahleel Brenton 1st Baronet [aged 51] and Harriet Brenton Lady Brenton were married. She by marriage Lady Brenton of London. They were first cousins.

On 31st May 1822 Charles Berney Petre [aged 27] and Elizabeth Howard were married. They were first cousins. He a great x 4 grandson of King Charles II of England Scotland and Ireland.

On 24th February 1823 Henry Wilson 11th Baron Berners [aged 26] and Mary Letitia Crump Baroness Berners [aged 22] were married. They were first cousins.

In 1824 George Harry Grey 8th Baron Grey of Groby [aged 21] and Katherine Charteris Baroness Grey Groby [aged 23] were married. She the daughter of Francis Charteris 8th Earl of Wemyss Douglas 4th Earl March [aged 51]. He the son of George Grey 6th Earl Stamford 2nd Earl Warrington [aged 58] and Henrietta Charteris Countess Stamford and Warrington. They were first cousins.

On 3rd March 1825 Thomas Beckett 3rd Baronet [aged 46] and Caroline Beckett [aged 37] were married. They were first cousins.

On 30th May 1825 Granville Dudley Ryder [aged 25] and Georgiana Augusta Somerset [aged 24] were married. She the daughter of Henry Charles Somerset 6th Duke Beaufort [aged 58] and Charlotte Sophia Leveson-Gower Duchess Beaufort [aged 54]. He the son of Dudley Ryder 1st Earl of Harrowby [aged 62] and Susanna Leveson-Gower Countess Harrowby Lincolnshire [aged 52]. They were first cousins.

On 27th March 1826 Reverend Henry Perceval [aged 26] and Catherine Isabella Drummond were married. They were first cousins.

On 22nd June 1826 James Henry Legge Dutton 3rd Baron Sherborne [aged 22] and Elizabeth Howard [aged 23] were married. She the daughter of Thomas Howard 16th Earl Suffolk 9th Earl Berkshire [aged 49] and Elizabeth Jane Dutton Countess Suffolk and Berkshire [aged 51]. They were first cousins.

On 2nd August 1826 John Jervis Tollemache 1st Baron Tollemache [aged 20] and Georgiana Louisa Best [aged 17] were married. They were first cousins.

On 15th January 1827 William Worsley 1st Baronet [aged 34] and Sarah Philadephia Cayley Baroness Worlsley [aged 25] were married. They were first cousins.

On 27th September 1827 Henry Bourchier Wrey 9th Baronet [aged 30] and Ellen Maria Toke [aged 26] were married at St James' Church, Piccadilly. They were first cousins.

On 15th April 1828 John Wilson aka Wilson-Patten 1st Baron Winmarleigh [aged 25] and Anna Maria Patten-Bold [aged 27] were married. They were first cousins.

On 31st March 1829 William Brodrick [aged 30] and Harriet Brodrick were married. They were first cousins.

On 23rd June 1829 Wriothesley Russell [aged 25] and Elizabeth Laura Henrietta Russell [aged 26] were married. He the son of John Russell 6th Duke Bedford [aged 62] and Georgiana Gordon Duchess Bedford [aged 47]. They were first cousins. He a great x 3 grandson of King Charles II of England Scotland and Ireland. She a great x 3 granddaughter of King Charles II of England Scotland and Ireland.

In 1830 Francis Henry Dickinson [aged 16] and Caroline Carey were married. They were first cousins.

In 1832 General William Carr Beresford 1st Viscount Beresford [aged 63] and Louisa Beresford Viscountess Beresford were married. There was no issue. She by marriage Viscountess Beresford of Beresford in Staffordshire. He the illegitmate son of George de la Poer Beresford 1st Marquess Waterford. They were first cousins.

On 13th April 1832 Reverend Robert Wilson [aged 30] and Harriet Crump were married. They were first cousins.

On 30th April 1833 Patrick John Nugent [aged 29] and Catherine Vesey were married. They were first cousins.

On 1st October 1833 Thomas Robert Salusbury 2nd Baronet [aged 50] and Elizabeth Mary Salusbury were married. They were first cousins.

In 1834 George Cary Elwes [aged 28] and Arabella Elizabeth Sophia Heneage were married. They were first cousins. She a great x 4 granddaughter of King Charles II of England Scotland and Ireland.

In 1834 Brook William Bridges 1st Baron FitzWalter [aged 32] and Fanny Cage were married. They were first cousins.

On 23rd April 1834 John Leslie-Melville 9th Earl of Leven 8th Earl Melville [aged 47] and Sophia Thornton [aged 22] were married. She his cousin and also first-cousin of his first wife Harriet Thornton. The difference in their ages was 25 years. He the son of Alexander Leslie-Melville 7th Earl of Leven 6th Earl of Melville and Jane Thornton. They were first cousins.

On 12th April 1836 Edward North Buxton 2nd Baronet [aged 23] and Catherine Gurney Lady Buxton [aged 22] were married. They were first cousins.

On 13th July 1836 Henry Cadogan 4th Earl Cadogan [aged 24] and Mary Sarah Wellesley Countess Cadogan [aged 27] were married at Durham Cathedral [Map]. He the son of George Cadogan 3rd Earl Cadogan [aged 53] and Honoria Blake Countess Cadogan [aged 61]. They were first cousins.

On 24th February 1837 Benjamin Lee Guiness 1st Baronet [aged 38] and Elizabeth Guiness [aged 23] were married. They were first cousins.

Before 28th May 1838 Francis Chaplin and Elizabeth Chaplin were married. They were first cousins.

On 9th August 1838 Charles Frederick Ashley-Cooper Ponsonby 2nd Baron de Mauley [aged 22] and Maria Jane Elizabeth Ponsonby Baroness Mauley [aged 19] were married. She the daughter of John Ponsonby 4th Earl Bessborough [aged 56] and Maria Fane. They were first cousins.

On 29th January 1839 Charles Darwin [aged 29] and Emma Wedgwood [aged 30] were married. They were first cousins.

In 1840 Henry Labouchere 1st Baron Taunton [aged 41] and Frances Baring [aged 27] were married. They were first cousins.

In 1840 Anthony Rothschild 1st Baronet [aged 29] and Louisa Montefiore Lady Rothschild [aged 18] were married. They were first cousins.

On 26th November 1840 John Simeon 3rd Baronet [aged 25] and Jane Maria Baker Lady Simeon [aged 21] were married at St George's Church, Hanover Square. They were first cousins.

In 1842 Nathaniel de Rothschild [aged 29] and Charlotte de Rothschild [aged 16] were married. They were first cousins.

On 6th April 1842 Mayer Carl Freiherr von Rothschild [aged 21] and Louise de Rothschild [aged 22] were married. They were first cousins.

On 8th September 1842 Francis Grosvenor Hood [aged 33] and Elizabeth Jane Hamond were married. They were first cousins.

On 23rd June 1844 Charles Stanley Monck 4th Viscount Monck [aged 24] and Elizabeth Louise Mary Monck were married. She the daughter of Henry Monck 1st Earl of Rathdowne [aged 58]. They were first cousins.

On 4th February 1845 Thomas Fowell Buxton [aged 22] and Rachel Jane Gurney [aged 21] were married. They were first cousins.

Before 5th August 1845 Algernon Henry Capell [aged 39] and Caroline Paget [aged 34] were married. They were first cousins.

On 7th August 1845 Reverend Edward Royds [aged 24] and Anne Mary Littledale [aged 25] were married at St Mary's Church, Walton-on-the-Hill. They were first cousins.

In 1846 Anthony Henley 3rd Baron Henley 1st Baron Northington [aged 20] and Julia Peel Baroness Henley were married. They were first cousins.

On 17th November 1846 Vice-Admiral Henry Bagot [aged 36] and Wilhemina Frederica Bagot were married. He the son of Bishop Richard Bagot [aged 63] and Harriet Villiers [aged 58]. They were first cousins.

On 24th November 1846 Lieutenant-General Richard Wilbraham [aged 35] and Elizabeth Frances Egerton were married. They were first cousins.

On 22nd February 1848 Reverend Frederick John Norman [aged 33] and Adeliza Elizabeth Gertrude Manners [aged 37] were married. She the daughter of John Henry Manners 5th Duke Rutland [aged 70] and Elizabeth Howard Duchess Rutland. They were first cousins.

On 29th September 1848 William Wells Addington 3rd Viscount Sidmouth [aged 24] and Georgiana Susan Pellew Viscountess Sidmouth [aged 18] were married. They were first cousins.

On 23rd May 1849 Charles Edward Petre [aged 25] and Charlotte Elizabeth Petre [aged 27] were married. They were first cousins. He a great x 5 grandson of King Charles II of England Scotland and Ireland. She a great x 5 granddaughter of King Charles II of England Scotland and Ireland.

On 24th May 1849 Henry Reynolds-Moreton 3rd Earl of Ducie [aged 21] and Julia Langston Countess Ducie [aged 19] were married. He the son of Henry Reynolds-Moreton 2nd Earl Ducie [aged 47] and Elizabeth Dutton Countess Ducie [aged 42]. They were first cousins.

On 10th March 1851 Henry William Parnell 3rd Baron Congleton [aged 41] and Caroline Margaret Dawson were married. They were first cousins.

On 26th September 1851 William Tollemache [aged 31] and Katherine Elizabeth Camilla Burke [aged 31] were married at the Church of St John, East Horrington. He the son of Lionel Tollemache 8th Earl Dysart [aged 56] and Maria Elizabeth Toone Countess Dysart. They were first cousins.

On 18th October 1851 George Spencer-Churchill 6th Duke of Marlborough [aged 57] and Jane Francis Stewart Duchess Marlborough were married. She by marriage Duchess Marlborough. He the son of George Spencer-Churchill 5th Duke of Marlborough and Susan Stewart Duchess of Marlborough. They were first cousins.

On 26th November 1851 Gilbert Kennedy [aged 29] and Margaret Baird [aged 20] were married. They were first cousins.

On 29th November 1851 Frederick William Cadogan [aged 29] and Adelaide Paget [aged 31] were married. She the daughter of Henry William Paget 1st Marquess Anglesey [aged 83] and Charlotte Cadogan Marchioness Anglesey [aged 70]. He the son of George Cadogan 3rd Earl Cadogan [aged 68] and Honoria Blake Countess Cadogan. They were first cousins.

On 28th April 1852 Hugh Lupus Grosvenor 1st Duke Westminster [aged 26] and Constance Leveson-Gower Duchess Westminster [aged 17] were married. Their first son Victor Alexander Grosvenor was born a year later to the day. She the daughter of George Sutherland Leveson-Gower 2nd Duke Sutherland [aged 65] and Harriet Elizabeth Georgiana Howard Duchess Sutherland [aged 45]. He the son of Richard Grosvenor 2nd Marquess Westminster [aged 57] and Elizabeth Mary Leveson-Gower Marchioness Westminster [aged 55]. They were first cousins.

On 28th April 1852 Watkin Williams-Wynn 6th Baronet [aged 31] and Marie Emily Williams-Wynn Lady Williams-Wynn were married. She by marriage Lady Williams of Gray's Inn. They were first cousins. He a great x 5 grandson of King James II of England Scotland and Ireland.

On 8th June 1852 Dudley Francis Fortescue [aged 31] and Camilla Eleanor Wallop were married. She the daughter of Newton Wallop aka Fellowes 4th Earl of Portsmouth [aged 79] and Catherine Fortescue Countess Portsmouth [aged 65]. He the son of Hugh Fortescue 2nd Earl Fortescue [aged 69] and Susan Ryder. They were first cousins.

On 8th June 1852 Berkeley Plantagenet Guilford Charles Noel [aged 30] and Millicent Mary Noel [aged 20] were married. They were first cousins.

On 15th February 1853 Ralph Tollemache [aged 26] and Caroline Tollemache [aged 24] were married. They were first cousins.

On 10th September 1853 Henry Gerard Sturt 1st Baron Alington [aged 28] and Augusta Bingham Baroness Alington [aged 21] were married. She the daughter of George Charles Bingham 3rd Earl Lucan [aged 53] and Anne Brudenell Countess Lucan [aged 44]. They were first cousins.

Before 5th November 1853 Charles Vere Ferrers Townshend [aged 68] and Charlotte Elizabeth Loftus were married. He the son of George Townshend 2nd Marquess Townshend and Charlotte Mainwaring Ellerker Countess of Leicester. They were first cousins.

In 1854 Charles William Wentworth-Fitzwilliam [aged 27] and Anne Dundas were married. He the son of Charles Wentworth-Fitzwilliam 5th and 3rd Earl Fitzwilliam [aged 67] and Mary Dundas. They were first cousins.

On 27th February 1854 General George Augustus Frederick Paget [aged 35] and Agnes Charlotte Paget were married. He the son of Henry William Paget 1st Marquess Anglesey [aged 85] and Charlotte Cadogan Marchioness Anglesey. They were first cousins.

On 18th April 1854 Archduke Karl Ferdinand of Austria [aged 35] and Archduchess Elisabeth Franziska of Austria [aged 23] were married. They were first cousins. She a great x 3 granddaughter of King George II of Great Britain and Ireland.

On 29th March 1855 Charles Buckworth-Herne-Soame 9th Baronet [aged 24] and Mary Proctor Lady Buckworth-Herne-Soame were married. They were first cousins. He a great x 5 grandson of King Charles II of England Scotland and Ireland.

On 17th April 1855 William Fitz-Clarence 2nd Earl Munster [aged 30] and Wilhelmina Kennedy-Erskine [aged 24] were married. He the son of George Fitz-Clarence 1st Earl Munster and Mary Wyndham Countess Munster. They were first cousins. He a grandson of King William IV of the United Kingdom. She a granddaughter of King William IV of the United Kingdom.

On 17th January 1856 Lieutenant-General Edward Thomas Gage [aged 30] and Arabella Elizabeth Gage were married. They were first cousins.

Before 13th November 1856 Reverend Brooke William Boothby 9th Baronet [aged 47] and Martha Serena Boothby were married. They were first cousins.

On 2nd December 1856 Frederick Charles George Fitz-Clarence [aged 30] and Adelaide Augusta Willhelmina Sidney were married. He the son of George Fitz-Clarence 1st Earl Munster and Mary Wyndham Countess Munster. They were first cousins. He a grandson of King William IV of the United Kingdom. She a granddaughter of King William IV of the United Kingdom.

Before 22nd March 1857 Lionel Eldred Smith-Gordon 2nd Baronet [aged 23] and Fanny Pottinger Lady Smith [aged 24] were married. She by marriage Lady Smith-Gordon of Jamaica. They were first cousins.

On 12th August 1857 William Schomberg Kerr 8th Marquess Lothian [aged 25] and Constance Harriet Mahonesa Talbot Marchioness Lothian [aged 21] were married. She by marriage Marchioness Lothian. She the daughter of Henry John Chetwynd-Talbot 3rd Earl Talbot 18th Earl of Shrewsbury [aged 53] and Sarah Elizabeth Beresford Countess Talbot Shrewsbury Waterford [aged 49]. He the son of John Kerr 7th Marquess Lothian and Cecil Chetwynd-Talbot Marchioness Lothian [aged 49]. They were first cousins.

In 1858 Charles Hepburn-Stuart-Forbes-Trefusis 20th Baron Clinton [aged 23] and Harriet Williamina Hepburn-Forbes Baroness Clinton [aged 23] were married at Fasque, Fettercairn. They were first cousins.

On 2nd August 1859 Charles Stuart Abbott 3rd Baron Tenterden [aged 24] and Penelope Smyth Baroness Tenterden [aged 19] were married at St Gabriel's Church, Pimlico. She by marriage Baroness Tenterden of Hendon in Middlesex. They were first cousins.

On 14th December 1859 George Venables-Vernon aka Warren 5th Baron Vernon [aged 56] and Frances Maria Emma Boothby were married. They were first cousins.

Before 1865 Richard Arabin [aged 52] and Elizabeth Mary Meux [aged 45] were married. They were first cousins.

On 3rd August 1865 Edward Cavendish [aged 27] and Emma Elizabeth Lascelles were married. He the son of William Cavendish 7th Duke Devonshire [aged 57] and Blanche Georgiana Howard. They were first cousins.

On 11th May 1867 Edmund Henry Mildmay [aged 52] and Augusta Jane St John-Mildmay were married. He the son of Henry St John-Mildmay 4th Baronet and Harriett Bouverie Countess Camden. They were first cousins. She a great x 4 granddaughter of King James II of England Scotland and Ireland.

On 8th April 1869 Charles Bennet Lawes-Wittewronge 2nd Baronet [aged 25] and Marie Amelie Rose Fountaine Lady Lawes [aged 20] were married at St George's Church, Hanover Square. They were first cousins.

On 10th July 1869 Major William Charles Wolseley [aged 34] and Annie Wolseley were married. They were first cousins.

Before 6th January 1870 Francis Augustus Fane [aged 45] and Augusta Fane [aged 38] were married. They were first cousins.

On 1st February 1876 Bishop Edward Bickersteth [aged 51] and Ellen Susanna Bickersteth [aged 45] were married. They were first cousins.

On 3rd February 1876 Algernon Charles Fountaine [aged 24] and Mary Fountaine [aged 28] were married by which Narford Ha was retained by the Fountaine family. They were first cousins.

On 3rd August 1876 Bernard Coleridge 2nd Baron Coleridge [aged 24] and Mary Alethea Mackarness Baroness Coleridge were married. They were first cousins.

On 9th September 1876 Arthur John Fludyer 5th Baronet [aged 31] and Augusta Borough Lady Fludyer [aged 34] were married. She by marriage Lady Fludyer. They were first cousins.

In 1878 Henry Howard Molyneux Herbert 4th Earl Carnarvon [aged 46] and Elizabeth Catherine Howard-Molyneux-Howard Countess Carnarvon [aged 21] were married. She by marriage Countess Carnarvon. The difference in their ages was 24 years. He the son of Henry John George Herbert 3rd Earl Carnarvon and Henrietta Anna Howard-Molyneux-Howard Countess Carnarvon. They were first cousins.

On 26th August 1884 Herbert Lloyd Watkin Williams-Wynn 7th Baronet [aged 24] and Louisa Alexandra Williams-Wynn Lady Williams-Wynn [aged 19] were married. They divorced in 1898 having had three children. They were first cousins.

On 6th June 1885 William Parker 2nd Baronet [aged 60] and Jane Constance Biddulph were married. They were first cousins.

On 2nd March 1886 Charles Frederick Heneage Bagot [aged 28] and Florence Eleanor Bagot were married. They were divorced in 1906. They were first cousins.

On 24th May 1888 Prince Henry Hohenzollern [aged 25] and Irene Hesse Darmstadt [aged 21] were married. She the daughter of Prince Louis Hesse Darmstadt IV Grand Duke [aged 50] and Princess Alice Saxe Coburg Gotha. He the son of Frederick III King Prussia [aged 56] and Victoria Empress Germany Queen Consort Prussia [aged 47]. They were first cousins. He a grandson of Queen Victoria of the United Kingdom. She a granddaughter of Queen Victoria of the United Kingdom.

On 4th June 1889 John Douglas-Scott-Montagu 2nd Baron Montagu of Beaulieu [aged 22] and Cecil Victoria Kerr Baroness Montagu of Beaulieu [aged 23] were married. She the daughter of Schomberg Henry Kerr Kerr 9th Marquess Lothian [aged 55] and Victoria Alexandrina Montagu-Douglas-Scott Marchioness Lothian [aged 44]. They were first cousins.

On 17th April 1890 Charles Hardinge 1st Baron Penshurt [aged 31] and Winifred Selina Sturt [aged 22] were married. They were first cousins.

In 1892 Lionel Sackville-West 3rd Baron Sackville [aged 24] and Victoria Sackville-West Baroness Sackville were married. They were first cousins.

On 2nd July 1892 Lieutenant-Colonel Hugh Annesley 5th Earl Annesley [aged 61] and Priscilla Cecilia Moore Countess Annesley were married at St Marylebone Church. She by marriage Countess Annesley of Castlewellan in County Down. He the son of William Richard Annesley 3rd Earl Annesley and Priscilla Cecilia Moore Countess Annesley. They were first cousins.

On 19th August 1892 Lieutenant Mark McDonnell [aged 40] and Emily Fanny Dorothy Osborn were married. He the son of Mark Kerr aka McDonnell 5th Earl of Antrim and Jane Macan Countess of Antrim. They were first cousins.

On 18th July 1893 Henry Robert Beauclerk Coventry [aged 21] and Mary Muriel Sophie Howard [aged 23] were married. She the daughter of Henry Charles Howard 18th Earl Suffolk 11th Earl Berkshire [aged 59] and Mary Eleanor Coventry Countess Suffolk and Berkshire [aged 45]. They were first cousins.

On 19th April 1894 Ernest Louis Hesse Darmstadt Grand Duke [aged 25] and Victoria Melita Windsor [aged 17] were married. She the daughter of Prince Alfred Windsor [aged 49] and Maria Holstein Gottorp Romanov [aged 40]. He the son of Prince Louis Hesse Darmstadt IV Grand Duke and Princess Alice Saxe Coburg Gotha. They were first cousins. He a grandson of Queen Victoria of the United Kingdom. She a granddaughter of Queen Victoria of the United Kingdom.

In 1896 Haakon VII King Norway [aged 23] and Maud Windsor Queen Consort Norway [aged 26] were married. She the daughter of King Edward VII of the United Kingdom [aged 54] and Alexandra of Denmark Queen Consort England [aged 51]. He the son of Frederick VIII King of Denmark [aged 52] and Louise of Sweden Queen Consort Denmark [aged 44]. They were first cousins. He a great x 4 grandson of King George II of Great Britain and Ireland.

On 27th April 1897 Frederick Gustavus Hamilton-Russell [aged 29] and Margaret Rachel Scott [aged 23] were married. She the daughter of John Scott 3rd Earl Eldon [aged 52]. They were first cousins.

On 20th January 1898 Henry Cyril "Toppy" Paget 5th Marquess Anglesey [aged 22] and Lilian Florence Chetwynd Marchioness of Anglesey [aged 21] were married in a Catholic ceremony at The Church of the Holy and Undivided Trinity with Saint Jude, Sloane Street. She the daughter of George Chetwynd 4th Baronet [aged 48] and Florence Cecilia Paget Marchioness Hastings [aged 55]. He the son of Henry Paget 4th Marquess Anglesey [aged 62] and Blanche Mary Boyd. They were first cousins.

On 7th November 1900 Lilian Florence Chetwynd Marchioness of Anglesey [aged 24] obtained a decree nisi. The marriage of Henry Cyril "Toppy" Paget 5th Marquess Anglesey [aged 25] and Lilian Florence Chetwynd Marchioness of Anglesey was later annulled on the grounds of non-consummation.

In 1901 Ernest Louis Hesse Darmstadt Grand Duke [aged 32] and Victoria Melita Windsor [aged 24] were divorced.

On 8th October 1905 Cyril Vladimirovich Holstein Gottorp Romanov [aged 28] and Victoria Melita Windsor [aged 28] were married. She the daughter of Prince Alfred Windsor and Maria Holstein Gottorp Romanov [aged 51]. They were first cousins. She a granddaughter of Queen Victoria of the United Kingdom.

On 21st April 1906 William Henry Edgecumbe 4th Earl of Mount Edgcumbe [aged 72] and Caroline Cecelia Edgecumbe Countess Revensworth and Mount Edgecumbe [aged 67] were married. She by marriage Countess of Mount Edgcumbe. He the son of Ernest Augustus Edgecumbe 3rd Earl of Mount Edgcumbe and Caroline Augusta Feilding Countess of Mount Edgcumbe. They were first cousins.

On 18th February 1908 George Beresford Plumptre [aged 38] and Mary Augusta Plumptre [aged 34] were married. They were first cousins.

On 25th November 1909 Clement Freeman-Mitford [aged 32] and Helen Alice Wyllington Ogilvy [aged 19] were married at the Private Chapel, Cortachy Castle, Angus. They had two daughters, Rosemary and Clementine who both died in 2005. She the daughter of David Ogilvy 11th Earl of Airlie and Mabell Gore Countess Airlie [aged 43]. They were first cousins.

On 19th August 1913 Walter Yarde-Buller [aged 54] and Alianore Chandos-Pole Lady Lethbridge [aged 44] were married. They were first cousins. She a great x 5 granddaughter of King Charles II of England Scotland and Ireland.

On 10th November 1913 Thomas Palk Carew 10th Baronet [aged 23] and Ivy Madeline Laura Breakey were married. They were divorced in 1921. They were first cousins.

On 2nd April 1919 Norman Lubbock [aged 57] and Edith Harriet Lubbock [aged 51] were married. They were first cousins.

On 22nd May 1919 Prince Axel of Denmark [aged 30] and Princess Ingeborg Glücksburg [aged 40] were married at Stockholm Cathedral. She the daughter of Frederick VIII King of Denmark and Louise of Sweden Queen Consort Denmark [aged 67]. They were first cousins. He a great x 4 grandson of King George II of Great Britain and Ireland. She a great x 4 granddaughter of King George II of Great Britain and Ireland.

On 12th September 1925 Major Terence Eden 8th Baron Auckland [aged 32] and Evelyn Vane Drummond of Cromlix Baroness Auckland [aged 20] were married. They were first cousins.

In or before 1926 Richard James Graham 4th Baronet [aged 66] and Mabel Cynthia Duncombe Lady Graham were married. She by marriage Lady Graham of Netherby in Cumberland. She the daughter of William Duncombe 1st Earl Feversham and Mabel Violet Graham Countess Feversham. They were first cousins.

On 18th October 1928 Henry Neville 3rd Marquess Abergavenny [aged 74] and Mary Frances Neville Marchioness Abergavenny [aged 59] were married. She by marriage Marchioness Abergavenny. He the son of William Neville 1st Marquess Abergavenny and Caroline Vanden Bempte Johnston Marchioness Abergavenny. They were first cousins.

On 6th July 1948 Peter Legh 4th Baron Newton [aged 33] and Priscilla Egerton-Warburton [aged 32] were married. They were first cousins.

Henry Bertie and Mary Bertie were married. He the son of James Bertie 1st Earl of Abingdon and Eleanor Lee Countess Abingdon. They were first cousins.

James Douglas 1st Baronet and Catherine Douglas Lady Kelhead were married. She the daughter of James Douglas 2nd Earl Queensberry and Margaret Stewart Countess Queensberry. They were first cousins.

John Finch and Elizabeth Savile were married. He the son of Heneage Finch 1st Earl Aylesford and Elizabeth Banks Countess Aylesford. They were first cousins.

Iorwerth "Drwyndwn aka Flat Nosed" Aberffraw and Marared ferch Madog Mathrafal were married. She the daughter of Madog ap Maredudd Mathrafal Prince Powys and Susanna Aberffraw. He the son of Owain "Great" King Gwynedd and Gwladus Unknown Queen Consort Gwynedd. They were first cousins.

John Manners-Sutton and Anne Manners were married. They were first cousins.

Bernard VII Count Armagnac and Bonne Valois Countess Armagnac and Savoy were married. She by marriage Countess Armagnac. She the daughter of John Valois 1st Duke Berry and Joanne Armagnac Duchess Berry. He the son of John II Count Armagnac and Jeanne Countess Armagnac. They were first cousins.

William Bertie and Anne Bulkeley were married. They were first cousins.

Before Cospatrick Alexander Douglas-Home 11th Earl of Home and Lucy Elizabeth Montagu Scott Countess Home were married. He the son of Alexander Ramey Home 10th Earl of Home and Elizabeth Scott Countess Home. They were first cousins. He a great x 5 grandson of King Charles II of England Scotland and Ireland. She a great x 5 granddaughter of King Charles II of England Scotland and Ireland.

Louis Armand Bourbon Condé Conti II Prince Conti and Louise Élisabeth Bourbon Condé Princess Conti were married. She by marriage Princess Conti. They were first cousins. He a great x 3 grandson of King James I of England and Ireland and VI of Scotland. She a great x 3 granddaughter of King James I of England and Ireland and VI of Scotland.

Helier Carteret and Margaret Carteret were married. The difference in their ages was 23 years; she, unusually, being older than him. They were first cousins.

Nicolas Lorraine II Duke Lorraine and Claude Lorraine Duchess Lorraine were married. She the daughter of Henry Lorraine II Duke Lorraine and Margherita Gonzaga Duchess Lorraine. He the son of Francis Lorraine II Duke Lorraine. They were first cousins.

Charles Tryon and Jane Savile were married. They were first cousins.

Albert Habsburg Spain VII Archduke Austria and Infanta Isabella Habsburg Spain were married. She the daughter of Philip "The Prudent" II King Spain and Elizabeth Valois Queen Consort Spain. He the son of Maximilian Habsburg Spain II Holy Roman Emperor and Maria of Spain Holy Roman Empress. They were first cousins.

Ferdinand of Spain II Holy Roman Emperor and Maria Anna Wittelsbach Holy Roman Empress were married. She by marriage Holy Roman Empress. She the daughter of William Wittelsbach V Duke Bavaria and Renata Lorraine Duchess Bavaria. They were first cousins.

Theobald Butler and Elizabeth Butler were married. She the daughter of Thomas "Black Tom" Butler 10th Earl Ormonde 3rd Earl Ossory and Elizabeth Sheffield Countess Ormonde and Ossory. They were first cousins.

August Wilhelm Hohenzollern and Alexandra Viktoria Auguste Leopoldine Glücksburg were married. She the daughter of Friedrich Ferdinand Glücksburg Duke Schleswig Holstein Sonderburg Glücksburg and Victoria Friederike Oldenburg Duchess Schleswig Holstein Sonderburg Glücksburg. He the son of Wilhelm Hohenzollern and Empress Auguste Viktoria Oldenburg. They were first cousins. He a great grandson of Queen Victoria of the United Kingdom. She a great x 4 granddaughter of King George II of Great Britain and Ireland.

Owain Fychan ap Madog Mathrafal Prince Powys Fadog and Angharad Aberffraw were married. She the daughter of Owain "Great" King Gwynedd. He the son of Madog ap Maredudd Mathrafal Prince Powys and Susanna Aberffraw. They were first cousins.

Charles Gordon 2nd Earl Aboyne and Elizabeth Lyon Countess Aboyne were married. She the daughter of Patrick Lyon 3rd Earl Strathmore and Kinghorne and Helen Middleton Countess Strathmore and Kinghorne. He the son of Charles Gordon 1st Earl Aboyne and Elizabeth Lyon Countess Aboyne. They were first cousins.

Lionel Boyle 3rd Earl Orrery and Mary Sackville Countess Orrery were married. She the illegitmate daughter of Charles Sackville 6th Earl Dorset 1st Earl Middlesex. He the son of Roger Boyle 2nd Earl Orrery and Mary Sackville Countess Orrery. They were first cousins.