Married Half Fourth Cousin

In 1090 Henry Reginar III Count Louvain and Gertrude Flanders Duchess Lorraine [aged 10] were married. Gertrude Flanders Duchess Lorraine by marriage Countess Louvain. She the daughter of Robert "The Frisian" I Count Flanders [aged 57] and Gertrude Billung Countess Holland [aged 60]. He the son of Henry Reginar II Count Louvain and Adela Thuringa Countess Louvain. They were half fourth cousins.

In or before 1130 Gilbert de Clare 1st Earl Pembroke [aged 29] and Isabel Beaumont Countess Pembroke were married. Isabel Beaumont Countess Pembroke by marriage Countess Pembroke. She the daughter of Robert Beaumont 1st Earl of Leicester Count Meulan and Elizabeth Capet Countess Leicester, Meulan and Surrey [aged 44]. They were half fourth cousins.

Before 15th January 1151 Elias Anjou 2nd Count Maine [aged 36] and Philippa Chateaudun Countess Maine were married. She the daughter of Routrou "The Great" Chateaudun III Count Perche and Matilda Fitzroy Countess Perche. He the son of Fulk "Young" King Jerusalem and Ermengarde of Maine Countess of Anjou. They were half fourth cousins. She a granddaughter of King Henry I "Beauclerc" England.

On 27th August 1172 Henry the Young King [aged 17] and Margaret Capet [aged 15] were married at Winchester Cathedral [Map]. Margaret's dowry included the Vexin; the border between France and Normandy. On the same day they were both crowned by Archbishop Rotrou. She the daughter of Louis VII King of the Franks [aged 52] and Constance of Castile Queen of the Franks. He the son of King Henry "Curtmantle" II of England [aged 39] and Eleanor of Aquitaine Queen Consort Franks and England [aged 50]. They were half fourth cousins.

Before 17th September 1177 Alfonso VIII King Castile [aged 21] and Eleanor Plantagenet Queen Consort Castile [aged 15] were married. She by marriage Queen Consort Castile. She the daughter of King Henry "Curtmantle" II of England [aged 44] and Eleanor of Aquitaine Queen Consort Franks and England [aged 55]. He the son of Sancho III King Castile and Blanche Ramirez Queen Consort Castile. They were half fourth cousins.

In 1219 John "Tadody aka Fatherless" Braose 8th Baron Bramber [aged 22] and Margred verch Llewellyn Baroness Clifford [aged 17] were married. They were half fourth cousins. He a great x 3 grandson of King Henry I "Beauclerc" England. She a granddaughter of King John of England.

In 1230 Dafydd ap Llewellyn Prince of Wales [aged 17] and Isabella "Lady of Snowdon" Braose Princess Wales [aged 8] were married. She the daughter of William de Braose 9th Baron Abergavenny 7th Baron Bramber [aged 26] and Eva Marshal [aged 27]. They were half fourth cousins. He a grandson of King John of England.

Before August 1242 John Marshal Earl Warwick [aged 30] and Margaret Beaumont 7th Countess Warwick were married. John Marshal Earl Warwick by marriage Earl Warwick. She the daughter of Henry Beaumont 5th Earl Warwick and Margaret Oili. They were half fourth cousins.

On 25 or 26th December 1251 King Alexander III of Scotland [aged 10] and Margaret Queen of Scotland [aged 11] were married at York Minster [Map]. She by marriage Queen Consort Scotland. The couple \remained in York until Jan 1252 after which they travelled to Edinburgh. She the daughter of King Henry III of England [aged 44] and Eleanor of Provence Queen Consort England [aged 28]. He the son of King Alexander II of Scotland and Marie Coucy [aged 33]. They were half fourth cousins. He a great x 3 grandson of King Henry I "Beauclerc" England.

In 1285 Otto Ivrea IV Count Burgundy [aged 37] and Mahaut Artois Countess Burgundy [aged 17] were married. Mahaut Artois Countess Burgundy by marriage Countess Burgundy. The difference in their ages was 20 years. She the daughter of Robert Artois II Count Artois [aged 34] and Amice Countenay Countess Artois. He the son of Hugh Ivrea Count Burgundy and Adelaide Andechs. They were half fourth cousins. He a great x 5 grandson of King William "Conqueror" I of England. She a great x 3 granddaughter of King Henry "Curtmantle" II of England.

After 20th January 1340 Robert Umfraville and Margaret Percy Baroness Ferrers Groby [aged 10] were married. He the son of Gilbert Umfraville 9th Earl Angus [aged 30] and Joan Willoughby Countess Angus. They were half fourth cousins. She a great x 5 granddaughter of King Henry "Curtmantle" II of England.

In July 1368 John Hastings 2nd Earl Pembroke [aged 20] and Anne Manny Countess Pembroke were married. She by marriage Countess Pembroke. She the daughter of Walter Manny 1st Baron Manny [aged 58] and Margaret Plantagenet 1st Duchess of Norfolk. He the son of Laurence Hastings 1st Earl Pembroke and Agnes Mortimer Countess of Pembroke. They were half fourth cousins. He a great x 5 grandson of King John of England. She a great granddaughter of King Edward I of England.

Around 1387 James Douglas 1st Lord Dalkeith [aged 17] and Elizabeth Stewart Lady Dalkeith were married. She the daughter of King Robert III of Scotland [aged 50] and Annabella Drummond Queen Consort Scotland [aged 37]. They were half fourth cousins. She a great x 5 granddaughter of King John of England.

On 2nd February 1387 King John I of Portugal [aged 35] and Philippa of Lancaster Queen Consort Portugal [aged 26] were married. She by marriage Queen Consort Portugal. She the daughter of John of Gaunt 1st Duke Lancaster [aged 46] and Blanche Duchess of Lancaster. He the son of Peter I King Portugal and Inês Castro. They were half fourth cousins. He a great x 5 grandson of King Henry "Curtmantle" II of England. She a granddaughter of King Edward III of England.

After 27th September 1397 Robert Stewart 1st Lord Lorn [aged 15] and Joan Stewart were married. She the daughter of Robert Stewart 1st Duke Albany [aged 57] and Margaret Graham 3rd Countess Menteith. They were half fourth cousins. She a great x 5 granddaughter of King John of England.

In 1404 Alexander Stewart 1st Earl of Mar [aged 29] and Isabel Douglas Countess Mar [aged 44] were married. Alexander Stewart 1st Earl of Mar by marriage Earl Mar. She the daughter of William Douglas 1st Earl Douglas and Margaret Mar Countess Douglas 11th Countess Mar. He the son of Alexander "The Wolf of Badenoch" Stewart 3rd Earl Buchan [aged 61] and Mariota Mackay Countess Moray. They were half fourth cousins. He a great x 5 grandson of King John of England.

Before 20th November 1409 Edward Courtenay [aged 24] and Eleanor Mortimer [aged 14] were married. She the daughter of Roger Mortimer 4th Earl March 3rd Earl of Ulster and Eleanor Holland Countess March and Ulster. He the son of Edward Courtenay 3rd or 12th Earl Devon [aged 52] and Maud Camoys Countess Devon. They were half fourth cousins. He a great x 3 grandson of King Edward I of England. She a great x 2 granddaughter of King Edward III of England.

On 27th July 1411 Richard Beauchamp 1st Earl of Worcester [aged 15] and Isabel Despencer Countess Warwick and Worcester [aged 11] were married. She the daughter of Thomas Despencer 1st Earl Gloucester and Constance York Countess Gloucester [aged 37]. They were half fourth cousins. He a great x 3 grandson of King Edward I of England. She a great granddaughter of King Edward III of England.

Before 1423 Richard Neville Earl Salisbury [aged 22] and Alice Montagu 5th Countess of Salisbury [aged 15] were married. She the daughter of Thomas Montagu 1st Count Perche 4th Earl Salisbury [aged 34] and Eleanor Holland. He the son of Ralph Neville 1st Earl of Westmoreland [aged 58] and Joan Beaufort Countess of Westmoreland [aged 43]. They were half fourth cousins. He a great grandson of King Edward III of England. She a great x 3 granddaughter of King Edward I of England.

Around 1435 Henry Scrope 4th Baron Scrope of Bolton [aged 16] and Elizabeth Scrope Baroness Scrope Bolton were married. Elizabeth Scrope Baroness Scrope Bolton by marriage Baroness Scrope of Bolton. They were half fourth cousins. He a great x 5 grandson of King Edward I of England.

After 1447 John Stanley [aged 24] and Elizabeth Vernon [aged 20] were married. They were half fourth cousins.

On 27th January 1447 Richard Beauchamp 2nd Baron Beauchamp Powick [aged 12] and Elizabeth Stafford [aged 12] were married at Beauchamp's Court, Alcester. They were half fourth cousins.

In or before 1485 Edmund Trafford [aged 42] and Margaret Savage [aged 28] were married. They were half fourth cousins. She a great x 5 granddaughter of King Edward I of England.

In December 1487 John Welles 1st Viscount Welles [aged 37] and Cecily York Viscountess Welles [aged 18] were married. She by marriage Viscountess Welles. She the daughter of King Edward IV of England and Elizabeth Woodville Queen Consort England [aged 50]. He the son of Lionel Welles 6th Baron Welles and Margaret Beauchamp Duchess Somerset. They were half fourth cousins. He a great x 5 grandson of King Edward I of England.

After 1501 William Fitzalan 11th or 18th Earl of Arundel [aged 25] and Elizabeth Willoughby Baroness Dynham were married. He the son of Thomas Fitzalan 10th or 17th Earl of Arundel [aged 51] and Margaret Woodville Countess Arundel. They were half fourth cousins. He a great x 4 grandson of King Edward III of England.

Before 7th February 1507 Charles Brandon 1st Duke of Suffolk [aged 23] and Margaret Neville [aged 41] were married. She the daughter of John Neville 1st Marquess Montagu and Isabel Ingaldsthorpe. They were half fourth cousins. She a great x 3 granddaughter of King Edward III of England.

After 7th February 1507 Charles Brandon 1st Duke of Suffolk [aged 23] and Margaret Neville [aged 41] were divorced. The marriage was declared void, the reason is unknown, by the Archdeaconry Court of London, and later by papal bull dated 12 May 1528.

Around 1509 Robert Willoughby 2nd Baron Willoughby 10th Baron Latimer [aged 37] and Dorothy Grey Baroness Mountjoy, Willoughby and Latimer [aged 29] were married. Dorothy Grey Baroness Mountjoy, Willoughby and Latimer by marriage Baroness Willoughby Broke, Baroness Latimer of Corby. She the daughter of Thomas Grey 1st Marquess Dorset and Cecily Bonville Marchioness Dorset [aged 48]. They were half fourth cousins. She a great x 4 granddaughter of King Edward III of England.

Before 1529 George Courtenay [aged 19] and Katherine St Leger [aged 14] were married. They were half fourth cousins.

In 1540 William Musgrave [aged 43] and Eleanor Burgh [aged 36] were married. They were half fourth cousins. She a great x 5 granddaughter of King Edward III of England.

Before 30th November 1545 Randolph Mainwaring [aged 50] and Elizabeth Brereton [aged 40] were married. They were half fourth cousins.

Before 4th March 1552 George Lumley 2nd Baron Lumley and Elizabeth Thornton Baroness Lumley were married. They were half fourth cousins. She a great x 3 granddaughter of King Edward III of England.

On 1st October 1552 Edward Clinton 1st Earl Lincoln [aged 40] and Elizabeth "The Fair Geraldine" Fitzgerald Countess Lincoln [aged 25] were married. She the daughter of Gerald Fitzgerald 9th Earl of Kildare and Elizabeth Grey Countess Kildare. They were half fourth cousins. She a great x 5 granddaughter of King Edward III of England.

After 1566 Maurice Roche 6th Viscount Fermoy and Catherine Fitzgerald Viscountess Fermoy were married. She the daughter of Gerald Fitzgerald 14th Earl Desmond [aged 33] and Eleanor Butler. They were half fourth cousins.

Between 13th January 1571 and 26th February 1572 Colin Campbell 6th Earl Argyll [aged 27] and Agnes Keith Countess Moray and Mar [aged 40] were married. Agnes Keith Countess Moray and Mar by marriage Countess Argyll. She the daughter of William Keith 4th Earl Marischal [aged 64] and Margaret Keith Countess Marischal. He the son of Archibald Campbell 4th Earl Argyll and Margaret Graham Countess Argyll. They were half fourth cousins.

In or before 1578 Ralph Eure 3rd Baron Eure [aged 19] and Mary Dawnay Baroness Eure [aged 20] were married. They were half fourth cousins.

After 19th May 1581 James Stewart 1st Earl Arran and Elizabeth Stewart Countess Arran Countess Lennox and March [aged 32] were married. She by marriage Countess Arran. She the daughter of John Stewart 4th Earl Atholl and Elizabeth Gordon Countess Atholl. They were half fourth cousins.

On 29th July 1585 George Sinclair 5th Earl Caithness [aged 14] and Jean Gordon [aged 25] were married. She the daughter of George Gordon 5th Earl Huntley and Anne Hamilton Countess Huntley. They were half fourth cousins.

On 28th February 1587 William Paulet 4th Marquess Winchester [aged 28] and Lucy Cecil Marchioness Winchester were married at St Martin in the Fields Church [Map]. She the daughter of Thomas Cecil 1st Earl Exeter [aged 44] and Dorothy Neville Countess Exeter [aged 39]. He the son of William Paulet 3rd Marquess Winchester [aged 55] and Agnes Howard Marchioness Winchester [aged 52]. They were half fourth cousins.

Before 25th March 1596 James Stewart 1st Earl Atholl [aged 30] and Mary Ruthven Countess Atholl were married. She the daughter of William Ruthven 1st Earl Gowrie and Dorothea Stewart Countess Gowrie [aged 55]. They were half fourth cousins.

Before 1599 Conyers Darcy 7th Baron Darcy of Knayth, 1st Baron Darcy Meinhill, 4th Baron Conyers [aged 28] and Dorothy Belasyse Baroness Darcy and Conyers [aged 26] were married. They were half fourth cousins.

Before 1604 Thomas Belasyse 1st Viscount Fauconberg [aged 26] and Barbara Cholmley [aged 28] were married. They were half fourth cousins.

On 26th November 1604 Alexander Oldenburg I Duke Schleswig Holstein Sonderburg [aged 31] and Dorothea Schwarzburg Duchess Schleswig Holstein Sonderburg [aged 25] were married at Sønderborg. She by marriage Duchess Schleswig Holstein Sonderburg Augustenburg. She the daughter of John Günther Schwarzburg 1st Count of Schwarzburg Sondershausen and Anna of Oldenburg. He the son of John "Younger" Oldenburg Duke Schleswig Holstein Sonderburg [aged 59] and Elisabeth of Brunswick-Grubenhagen. They were half fourth cousins.

In 1618 Arthur Goodwin [aged 25] and Jane Wenman [aged 18] were married. They were half fourth cousins.

On 25th October 1618 Johann Philipp Wettin Duke Saxe Altenburg [aged 21] and Elisabeth of Brunswick-Wolfenbüttel Duchess of Saxe-Altenburg [aged 25] were married. He the son of Friedrich Wilhelm Wettin I Duke Saxe Weimar and Anna Maria Countess Palatine of Neuburg [aged 43]. They were half fourth cousins.

Before 4th June 1630 James Douglas 2nd Earl Queensberry [aged 8] and Mary Hamilton were married. She the daughter of James Hamilton 2nd Marquess Hamilton and Ann Cunningham Marchioness Hamilton [aged 45]. He the son of William Douglas 1st Earl Queensberry [aged 48] and Isabel Kerr Countess Queensberry. They were half fourth cousins.

Before 4th May 1631 William Brereton 2nd Baron Brereton [aged 20] and Elizabeth Goring Baroness Brereton were married. She the daughter of George Goring 1st Earl Norwich [aged 46] and Mary Neville [aged 41]. They were half fourth cousins.

Before 1634 William Douglas 1st Marquess Douglas [aged 44] and Mary Gordon Marchioness Douglas [aged 33] were married. Mary Gordon Marchioness Douglas by marriage Countess Angus. She the daughter of George Gordon 1st Marquess Huntly [aged 71] and Henrietta Stewart Marchioness Huntly [aged 60]. He the son of William Douglas 10th Earl Angus and Elizabeth Oliphant Countess Angus. They were half fourth cousins.

Before 29th March 1637 Luke Plunkett 1st Earl of Fingall and Margaret St Lawrence Countess Fingall were married. Margaret St Lawrence Countess Fingall by marriage Countess of Fingall. They were half fourth cousins.

Before 1638 John Fortescue 2nd Baronet [aged 23] and Margaret Arundell [aged 22] were married. They were half fourth cousins.

In 1647 James Compton 3rd Earl of Northampton [aged 24] and Isabella Sackville Countess Northampton [aged 24] were married. Isabella Sackville Countess Northampton by marriage Countess of Northampton. She the daughter of Richard Sackville 3rd Earl Dorset and Anne Clifford Countess Dorset and Pembroke [aged 56]. He the son of Spencer Compton 2nd Earl of Northampton and Mary Beaumont Countess of Northampton [aged 43]. They were half fourth cousins.

In 1649 John Stewart 2nd Earl Traquair [aged 24] and Henrietta Gordon were married. She the daughter of George Gordon 2nd Marquess Huntly [aged 57] and Anna Campbell Marchioness Huntly. He the son of John Stewart 1st Earl Traquair [aged 49] and Catherine Carnegie Countess Traquair [aged 49]. They were half fourth cousins.

In April 1650 David Wemyss 2nd Earl of Wemyss [aged 39] and Helenor Fleming were married. She the daughter of John Fleming 2nd Earl Wigtown and Margaret Livingston Countess Wigtown. He the son of John Wemyss 1st Earl of Wemyss and Jane Gray Countess Wemyss. They were half fourth cousins. He a great x 4 grandson of King Henry VII of England and Ireland.

On 9th June 1677 John Rolle and Christian Bruce [aged 19] were married. She the daughter of Robert Bruce 2nd Earl Elgin 1st Earl Ailesbury [aged 51] and Diana Grey Countess Elgin and Ailesbury [aged 47]. They were half fourth cousins.

On 9th July 1681 James Graham 3rd Marquess Montrose [aged 23] and Christian Leslie Marchioness Montrose [aged 19] were married. Christian Leslie Marchioness Montrose by marriage Marchioness Montrose. She the daughter of John Leslie 1st Duke Rothes [aged 51] and Anne Lindsay Duchess Rothes. He the son of James Graham 2nd Marquess Montrose and Isabel Douglas Marchioness Montrose. They were half fourth cousins.

Before 6th May 1684 John Murray 1st Duke Atholl [aged 24] and Catherine Hamilton Duchess Atholl [aged 22] were married. Catherine Hamilton Duchess Atholl by marriage Duchess Atholl. She the daughter of William Hamilton 1st Duke Hamilton [aged 49] and Anne Hamilton 3rd Duchess Hamilton [aged 52]. He the son of John Murray 1st Marquess Atholl [aged 53] and Amelia Stanley Marchioness Atholl [aged 51]. They were half fourth cousins. He a great x 5 grandson of King Henry VII of England and Ireland.

After 9th May 1703 Thomas Windsor 1st Viscount Windsor [aged 33] and Charlotte Herbert Viscountess Windsor [aged 27] were married. Charlotte Herbert Viscountess Windsor by marriage Viscountess Windsor. She the daughter of Philip "Infamous Earl" Herbert 7th Earl Pembroke 4th Earl Montgomery and Henrietta Kéroualle Countess Pembroke and Montgomery. He the son of Thomas Hickman Windsor 1st Earl Plymouth and Ursula Widdrington Countess Plymouth [aged 55]. They were half fourth cousins.

After 18th May 1710 Thomas Stonor [aged 32] and Winifred Roper were married. They were half fourth cousins.

On 1st October 1741 Thomas Erskine [aged 36] and Charlotte Hope [aged 21] were married. She the daughter of Charles Hope 1st Earl Hopetoun [aged 60] and Henrietta Johnstone [aged 58]. He the son of John Erskine 23rd Earl of Mar and Margaret Hay Countess Mar. They were half fourth cousins.

On 30th March 1761 Richard Henry Bedingfield 4th Baronet [aged 40] and Mary Browne [aged 39] were married. They were half fourth cousins.

On 8th November 1766 William Cavendish-Bentinck 3rd Duke Portland [aged 28] and Dorothy Cavendish 3rd Duchess Portland [aged 16] were married. Dorothy Cavendish 3rd Duchess Portland by marriage Duchess Portland. She the daughter of William Cavendish 4th Duke Devonshire and Charlotte Elizabeth Boyle Marchioness Hartington. He the son of William Bentinck 2nd Duke Portland and Margaret Cavendish Harley 2nd Duchess Portland [aged 51]. They were half fourth cousins.

On 26th December 1775 Charles Manners 4th Duke Rutland [aged 21] and Mary Isabella Somerset Duchess Rutland [aged 19] were married. She the daughter of Charles Noel Somerset 4th Duke Beaufort and Elizabeth Berkeley Duchess Beaufort [aged 62]. They were half fourth cousins.

On 6th June 1781 Peter I Grand Duke of Oldenburg [aged 26] and Duchess Frederica of Württemberg [aged 15] were married. They were half fourth cousins. She a great x 5 granddaughter of King James I of England and Ireland and VI of Scotland.

In 1792 William "Lord Dashalong" Molyneux 2nd Earl Sefton [aged 19] and Maria Margaret Craven Countess Sefton were married. She the daughter of William Craven 6th Baron Craven and Elizabeth Berkeley Margrave Brandenburg-Ansbach [aged 41]. He the son of Charles Molyneux 1st Earl Sefton [aged 43] and Isabella Stanhope Countess Sefton [aged 44]. They were half fourth 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.

Before 1st July 1809 Francis Russell 7th Duke Bedford [aged 21] and Anna Maria Stanhope Duchess Bedford [aged 25] were married. She the daughter of Charles Stanhope 3rd Earl of Harrington [aged 56] and Jane Fleming Countess Harrington [aged 54]. He the son of John Russell 6th Duke Bedford [aged 42] and Georgiana Elizabeth Byng. They were half fourth 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 March 1811 Admiral George Francis Seymour-Conway [aged 23] and Georgina Mary Berkeley were married. They were half fourth cousins. He a great x 3 grandson of King James II of England Scotland and Ireland. She a great x 3 granddaughter of King Charles II of England Scotland and Ireland.

On 16th June 1816 Augustus Fitzgerald 3rd Duke Leinster [aged 24] and Charlotte Augusta Stanhope Duchess Leinster [aged 23] were married. Charlotte Augusta Stanhope Duchess Leinster by marriage Duchess Leinster. She the daughter of Charles Stanhope 3rd Earl of Harrington [aged 63] and Jane Fleming Countess Harrington [aged 61]. He the son of William Robert Fitzgerald 2nd Duke Leinster and Emilia St George Duchess Leinster. They were half fourth 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 24th February 1823 Lieutenant-Colonel William Henry Meyrick [aged 33] and Laura Vane [aged 16] were married. She the daughter of William Henry Vane 1st Duke Cleveland [aged 56] and Catharine Margaret Powlett Countess Darlington. They were half fourth 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 8th July 1862 Henry Farquhar 4th Baronet [aged 23] and Alice Brand Lady Farquhar [aged 22] were married. They were half fourth cousins. She a great x 5 granddaughter of King Charles II of England Scotland and Ireland.

On 19th September 1872 Victor Albert George Child-Villiers 7th Earl Jersey [aged 27] and Margaret Elizabeth Leigh Countess Jersey [aged 22] were married. Margaret Elizabeth Leigh Countess Jersey by marriage Countess Jersey. He the son of George Child-Villiers 6th Earl Jersey and Julia Peel Countess Jersey. They were half fourth cousins.

In or before 1882 Francis Henry Baring [aged 31] and Grace Elizabeth Baring were married. She the daughter of Richard Boyle 9th Earl Cork [aged 52] and Emily Charlotte Burgh Countess Cork [aged 53]. They were half fourth cousins.

On 14th June 1923 Henry Hugh Arthur Fitzroy Somerset 10th Duke Beaufort [aged 23] and Mary Cambridge Duchess Beaufort [aged 26] were married. Mary Cambridge Duchess Beaufort by marriage Duchess Beaufort. She the daughter of Adolphus Cambridge Duke Teck [aged 54] and Margaret Evelyn Grosvenor Duchess Teck [aged 50]. He the son of Henry Adelbert Wellington Fitzroy 9th Duke Beaufort [aged 76] and Louise Emily Harford 9th Duchess Beaufort [aged 58]. They were half fourth cousins. She a great x 2 granddaughter of King George III of Great Britain and Ireland.

In 1936 Charles Ingram Courtenay Wood 2nd Earl Halifax [aged 23] and Ruth Alice Hannah Mary Primrose Countess Halifax [aged 19] were married. He the son of Edward Frederick Lindley Wood 1st Earl Halifax [aged 54] and Dorothy Evelyn Augusta Onslow Countess Halifax [aged 51]. They were half fourth cousins.

On 21st October 1964 Sheriden Frederick Terence Hamilton-Temple-Blackwood 5th Marquess of Dufferin and Ava [aged 26] and Serena Belinda Rosemary Guinness Marchioness of Dufferin and Ava [aged 23] were married at Westminster Abbey [Map]. Serena Belinda Rosemary Guinness Marchioness of Dufferin and Ava by marriage Marchioness of Dufferin and Ava. He the son of Basil Sheridan Hamilton-Temple-Blackwood 4th Marquess of Dufferin and Ava and Maureen Constance Guinness Marchioness of Dufferin and Ava [aged 57]. They were half fourth cousins.

Conan "The Young" Penthièvre IV Duke Brittany and Margaret Dunkeld Duchess Brittany were married. Margaret Dunkeld Duchess Brittany by marriage Duchess Brittany. She the daughter of Henry Dunkeld 3rd Earl Huntingdon 1st Earl of Northumbria and Ada Warenne Countess Huntingdon and Northumbria. He the son of Alan "Black" Penthièvre 1st Earl Richmond and Bertha Canhiart I Duchess Brittany. They were half fourth cousins. He a great grandson of King Henry I "Beauclerc" England.

Neil Edmund McCorquodale and Sarah Spencer were married. She the daughter of John Spencer 8th Earl Spencer and Frances Ruth Roche Countess Spencer. They were half fourth cousins.

In 947 Lothair II King of Italy and Adelaide of Italy Holy Roman Empress were married. She the daughter of Rudolph "Pious" II King Burgundy II King Italy and Bertha Swabia Queen Consort Italy. They were half fourth cousins.

Gilbert Talbot and Margaret Howard were married. The difference in their ages was 29 years. They were half fourth cousins. She a great x 3 granddaughter of King John of England.

Henry Hastings and Dorothy Willoughby were married. He the son of George Hastings 4th Earl Huntingdon and Dorothy Port Countess Huntingdon. They were half fourth cousins.

John Bigod and Elizabeth Scrope were married. They were half fourth cousins. He a great x 3 grandson of King Edward III of England.

Baldwin II Count Hainaut and Ida Reginar Countess Hainaut were married. Ida Reginar Countess Hainaut by marriage Countess Hainaut. She the daughter of Henry Reginar II Count Louvain and Adela Thuringa Countess Louvain. He the son of Baldwin VI Count Flanders I Count Hainaut and Richilde Countess Flanders and Hainaut. They were half fourth cousins.

Walter Gaunt and Maud Penthièvre were married. She the daughter of Stephen Penthièvre Count Tréguier and Hawise Guingamp. They were half fourth cousins.