Paternal Family Tree: Bentinck
Maternal Family Tree: Eleanor Gifford 1575
On 11th June 1734 [his father] William Bentinck 2nd Duke Portland 1709-1762 [aged 25] and [his mother] Margaret Cavendish Harley 2nd Duchess Portland 1715-1785 [aged 19] were married at St Peter aka Oxford Chapel Vere Street Marylebone [Map]. She by marriage Duchess Portland. She the daughter of [his grandfather] Edward Harley 2nd Earl of Oxford and Earl Mortimer [aged 45] and [his grandmother] Henrietta Cavendish Holles Countess of Oxford and Mortimer 1694-1755 [aged 40]. He the son of Henry Bentinck 1st Duke Portland 1682-1726 and Elizabeth Noel Duchess Portland 1688-1737 [aged 46]. They were sixth cousins.
On 14th April 1738 William Cavendish-Bentinck 3rd Duke Portland was born to William Bentinck 2nd Duke Portland 1709-1762 [aged 29] and Margaret Cavendish Harley 2nd Duchess Portland 1715-1785 [aged 23] at Welbeck Abbey, Nottinghamshire [Map].
In 1759 [his brother-in-law] Thomas Thynne 1st Marquess of Bath [aged 24] and [his sister] Elizabeth Bentinck Marchioness Bath 1735-1825 [aged 23] were married. She by marriage Viscountess Weymouth. She the daughter of [his father] William Bentinck 2nd Duke Portland 1709-1762 [aged 49] and [his mother] Margaret Cavendish Harley 2nd Duchess Portland 1715-1785 [aged 43]. They were third cousins.
On 1st May 1762 [his father] William Bentinck 2nd Duke Portland 1709-1762 [aged 53] died. His succeeded son William [aged 24] succeeded 3rd Duke Portland, 4th Earl of Portland.
On 28th May 1763 [his brother-in-law] George Grey 5th Earl Stamford 1st Earl Warrington [aged 25] and [his sister] Henrietta Bentinck Countess Stamford and Warrington 1737-1827 [aged 26] were married. She by marriage Countess Stamford. She the daughter of [his father] William Bentinck 2nd Duke Portland 1709-1762 and [his mother] Margaret Cavendish Harley 2nd Duchess Portland 1715-1785 [aged 48]. He the son of Henry Grey 4th Earl Stamford [aged 47] and Mary Booth Countess Stamford [aged 59].
On 8th November 1766 William Cavendish-Bentinck 3rd Duke Portland [aged 28] and Dorothy Cavendish 3rd Duchess Portland 1750-1794 [aged 16] were married. She by marriage Duchess Portland. She the daughter of William Cavendish 4th Duke Devonshire and Charlotte Elizabeth Boyle Marchioness Hartington 1731-1754. He the son of William Bentinck 2nd Duke Portland 1709-1762 and Margaret Cavendish Harley 2nd Duchess Portland 1715-1785 [aged 51]. They were half fourth cousins.
On 23rd June 1768 [his son] William Henry Cavendish-Scott-Bentinck 4th Duke Portland 1768-1854 was born to William Cavendish-Bentinck 3rd Duke Portland [aged 30] and [his wife] Dorothy Cavendish 3rd Duchess Portland 1750-1794 [aged 17]. He married 4th August 1795 Henrietta Scott Duchess Portland and had issue.
On 7th June 1774 [his brother-in-law] William Cavendish 5th Duke Devonshire [aged 26] and Georgiana Spencer Duchess Devonshire [aged 17] were married at St Mary's Church, Wimbledon. It was her 17th birthday. She by marriage Duchess Devonshire. She the daughter of John Spencer 1st Earl Spencer [aged 39] and Margaret Georgiana Poyntz Countess Spencer [aged 37]. He the son of William Cavendish 4th Duke Devonshire and Charlotte Elizabeth Boyle Marchioness Hartington 1731-1754. They were fourth cousins.
On 14th September 1774 [his son] William Henry Cavendish-Bentinck 1774-1839 was born to William Cavendish-Bentinck 3rd Duke Portland [aged 36] and [his wife] Dorothy Cavendish 3rd Duchess Portland 1750-1794 [aged 24]. He married 19th February 1803 Mary Acheson 1787-1843, daughter of Arthur Acheson 1st Earl Gosford 1745-1807 and Millicent Pole Countess Gosford 1750-1825.
On 3rd October 1775 [his daughter] Charlotte Cavendish-Bentinck 1775-1862 was born to William Cavendish-Bentinck 3rd Duke Portland [aged 37] and [his wife] Dorothy Cavendish 3rd Duchess Portland 1750-1794 [aged 25]. She married before 26th August 1832 her second cousin twice removed Charles Greville 1762-1832 and had issue.
On 13th March 1779 [his daughter] Mary Cavendish-Bentinck 1779-1843 was born to William Cavendish-Bentinck 3rd Duke Portland [aged 40] and [his wife] Dorothy Cavendish 3rd Duchess Portland 1750-1794 [aged 28].
On 20th May 1780 [his son] Charles Cavendish-Bentinck 1780-1826 was born to William Cavendish-Bentinck 3rd Duke Portland [aged 42] and [his wife] Dorothy Cavendish 3rd Duchess Portland 1750-1794 [aged 29]. He married (1) 21st September 1808 Georgiana Augusta Frederica Seymour 1782-1813 (2) 16th July 1816 Anne Wellesley Lady Abdy 1788-1875, daughter of Richard Wellesley 1st Marquess Wellesley and Hyacinthe Gabrielle Roland Marchioness Wellesley, and had issue.
On 2nd November 1781 [his son] Frederick Cavendish-Bentinck 1781-1828 was born to William Cavendish-Bentinck 3rd Duke Portland [aged 43] and [his wife] Dorothy Cavendish 3rd Duchess Portland 1750-1794 [aged 31]. He married 16th September 1820 Mary Lowther 1785-1863, daughter of William Lowther 1st Earl Lonsdale and Augusta Fane Countess Lonsdale 1761-1838, and had issue.
Abbot John Whethamstede’s Chronicle of the Abbey of St Albans
Abbot John Whethamstede's Register aka Chronicle of his second term at the Abbey of St Albans, 1451-1461, is a remarkable text that describes his first-hand experience of the beginning of the Wars of the Roses including the First and Second Battles of St Albans, 1455 and 1461, respectively, their cause, and their consequences, not least on the Abbey itself. His text also includes Loveday, Blore Heath, Northampton, the Act of Accord, Wakefield, and Towton, and ends with the Coronation of King Edward IV. In addition to the events of the Wars of the Roses, Abbot John, or his scribes who wrote the Chronicle, include details in the life of the Abbey such as charters, letters, land exchanges, visits by legates, and disputes, which provide a rich insight into the day-to-day life of the Abbey, and the challenges faced by its Abbot.
Available at Amazon in eBook and Paperback format.
On 27th February 1782 [his brother-in-law] George Augustus Henry Cavendish 1st Earl Burlington 1754-1834 [aged 27] and Elizabeth Compton Countess Burlington 1760-1835 [aged 21] were married at London. She by marriage Countess Burlington. She the daughter of Charles Compton 7th Earl of Northampton 1737-1763 and Anne Somerset Countess Northampton. He the son of William Cavendish 4th Duke Devonshire and Charlotte Elizabeth Boyle Marchioness Hartington 1731-1754. They were fourth cousins.
On 17th July 1785 [his mother] Margaret Cavendish Harley 2nd Duchess Portland 1715-1785 [aged 70] died.
1792. Thomas Lawrence [aged 22]. Portrait of William Cavendish-Bentinck 3rd Duke Portland [aged 53].
In 1794 King George III of Great Britain and Ireland [aged 55] created new Garter Knights as follows:
617th Henry Scott 3rd Duke Buccleuch [aged 47],
618th William Frederick Hanover 2nd Duke Gloucester and Edinburgh [aged 17],
619th William Cavendish-Bentinck 3rd Duke Portland [aged 55].
On 3rd June 1794 [his wife] Dorothy Cavendish 3rd Duchess Portland 1750-1794 [aged 43] died. She was buried at St Marylebone Church.
On 4th August 1795 William Henry Cavendish-Scott-Bentinck 4th Duke Portland 1768-1854 [aged 27] and Henrietta Scott Duchess Portland [aged 21] were married. She by marriage Duchess Portland. He the son of William Cavendish-Bentinck 3rd Duke Portland [aged 57] and Dorothy Cavendish 3rd Duchess Portland 1750-1794.
On 19th February 1803 William Henry Cavendish-Bentinck 1774-1839 [aged 28] and Mary Acheson 1787-1843 [aged 16] were married. She the daughter of Arthur Acheson 1st Earl Gosford 1745-1807 [aged 58] and Millicent Pole Countess Gosford 1750-1825 [aged 53]. He the son of William Cavendish-Bentinck 3rd Duke Portland [aged 64] and Dorothy Cavendish 3rd Duchess Portland 1750-1794.
On 31st March 1807 William Cavendish-Bentinck 3rd Duke Portland [aged 68] was appointed Prime Minister.
On 21st September 1808 Charles Cavendish-Bentinck 1780-1826 [aged 28] and Georgiana Augusta Frederica Seymour 1782-1813 [aged 26] were married. She the daughter of King George IV of Great Britain and Ireland [aged 46] and Grace Elliott. He the son of William Cavendish-Bentinck 3rd Duke Portland [aged 70] and Dorothy Cavendish 3rd Duchess Portland 1750-1794.
On 30th October 1809 William Cavendish-Bentinck 3rd Duke Portland [aged 71] died. His succeeded son William [aged 41] succeeded 4th Duke Portland, 5th Earl of Portland.
1814. Benjamin West [aged 75]. Portrait of William Cavendish-Bentinck 3rd Duke Portland.
Kings Wessex: Great x 21 Grand Son of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 17 Grand Son of Owain "Great" King Gwynedd
Kings Seisyllwg: Great x 23 Grand Son of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 18 Grand Son of Maredudd ap Bleddyn King Powys
Kings Godwinson: Great x 22 Grand Son of King Harold II of England
Kings England: Great x 9 Grand Son of King Edward IV of England
Kings Scotland: Great x 16 Grand Son of King William I of Scotland
Kings France: Great x 14 Grand Son of King Philip IV of France
Kings Duke Aquitaine: Great x 25 Grand Son of Ranulf I Duke Aquitaine 820-866
Kings Spain: Great x 17 Grand Son of Alfonso VII King Castile VII King Leon
Great x 1 Grandfather: William Bentinck 1st Earl of Portland 
GrandFather: Henry Bentinck 1st Duke Portland 1682-1726 11 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: George Villiers of Brokesby 1544-1606 
Great x 3 Grandfather: Edward Villiers 1585-1626
Great x 4 Grandmother: Audrey Saunders
Great x 2 Grandfather: Edward Villiers 9 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: John St John 1552-1594 
7 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Barbara St John -1672 8 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Lucy Hungerford 
11 x Great Grand Daughter of King Henry III of England
Great x 1 Grandmother: Anne Villiers Countess Portland 1651-1688 10 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Thomas Howard 1st Earl Suffolk 
7 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Theophilus Howard 2nd Earl Suffolk 8 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Catherine Knyvet Countess Suffolk 
9 x Great Grand Daughter of King Edward I of England
Great x 2 Grandmother: Frances Howard -1677 9 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: George Home 1st Earl Dunbar
Great x 3 Grandmother: Elizabeth Home Countess Suffolk 1599-1633 15 x Great Grand Daughter of King John of England
Great x 4 Grandmother: Elizabeth Gordon Countess Dunbar 1575-1645 14 x Great Grand Daughter of King John of England
Father: William Bentinck 2nd Duke Portland 1709-1762 11 x Great Grand Son of King Henry IV of England
Great x 4 Grandfather: Edward Noel 2nd Viscount Campden 
20 x Great Grand Son of Hugh I King of the Franks
Great x 3 Grandfather: Baptist Noel 3rd Viscount Campden 21 x Great Grand Son of Hugh I King of the Franks
Great x 4 Grandmother: Juliana Hicks Viscountess Campden
Great x 2 Grandfather: Edward Noel 1st Earl Gainsborough 22 x Great Grand Son of Hugh I King of the Franks
Great x 4 Grandfather: Thomas Wotton 2nd Baron Wotton 1587-1630 
Great x 3 Grandmother: Hester Wotton Viscountess Campden 1615-1655
Great x 1 Grandfather: Wriothesley Baptist Noel 2nd Earl Gainsborough 1661-1690 9 x Great Grand Son of King Henry IV of England
Great x 4 Grandfather: Henry Wriothesley 3rd Earl of Southampton 
7 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Thomas Wriothesley 4th Earl of Southampton 2nd Earl Chichester 7 x Great Grand Son of King Henry IV of England
Great x 4 Grandmother: Elizabeth Vernon Countess Southampton 1572-1655 
6 x Great Grand Daughter of King Henry IV of England
Great x 2 Grandmother: Elizabeth Wriothesley Countess Gainsborough 8 x Great Grand Daughter of King Henry IV of England
Great x 4 Grandfather: Francis Leigh 1st Earl Chichester 21 x Great Grand Son of Hugh I King of the Franks
Great x 3 Grandmother: Elizabeth Leigh Countess Southampton 1620-1655 13 x Great Grand Daughter of King Edward I of England
Great x 4 Grandmother: Audrey Boteler Countess Chichester 12 x Great Grand Daughter of King Edward I of England
GrandMother: Elizabeth Noel Duchess Portland 1688-1737 10 x Great Grand Daughter of King Henry IV of England
Great x 4 Grandfather: Fulk Greville -1632 
7 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Robert Greville 2nd Baron Brooke 1607-1643 8 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Mary Copley
Great x 2 Grandfather: Fulke Greville 5th Baron Brooke 1643-1710 9 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Francis Russell 4th Earl Bedford 
10 x Great Grand Son of King John of England
Great x 3 Grandmother: Catherine Russell Baroness Brooke -1676 9 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Catherine Brydges Countess Bedford 8 x Great Grand Daughter of King Edward III of England
Great x 1 Grandmother: Catherine Greville Duchess Buckingham and Normandby 10 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Samuel Dashwood 1574-1638 
Great x 3 Grandfather: Francis Dashwood 1603-1683
Great x 2 Grandmother: Sarah Dashwood Baroness Brooke 1646-1705
Great x 4 Grandfather: Richard Sleigh
Great x 3 Grandmother: Alice Sleigh
William Cavendish-Bentinck 3rd Duke Portland 9 x Great Grand Son of King Edward IV of England
Great x 4 Grandfather: Thomas Harley 1548-1641
Great x 3 Grandfather: Robert Harley 1579-1656 10 x Great Grand Son of King John of England
Great x 4 Grandmother: Margaret Corbet 1548-1579 9 x Great Grand Daughter of King John of England
Great x 2 Grandfather: Edward Harley 1624-1700 9 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Edward Conway 1st Viscount Conway 
7 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Brilliana Conway 8 x Great Grand Daughter of King Edward III of England
Great x 1 Grandfather: Robert Harley 1st Earl of Oxford and Earl Mortimer 10 x Great Grand Son of King Edward III of England
GrandFather: Edward Harley 2nd Earl of Oxford and Earl Mortimer 11 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Richard Foley 1580-1657
Great x 3 Grandfather: Thomas Foley 1617-1677
Great x 4 Grandmother: Alice Brindley
Great x 2 Grandfather: Thomas Foley 1641-1701
Great x 1 Grandmother: Elizabeth Foley Countess of Oxford and Mortimer
Mother: Margaret Cavendish Harley 2nd Duchess Portland 1715-1785 8 x Great Grand Daughter of King Edward IV of England
Great x 4 Grandfather: John Holles 1st Earl de Clare 7 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: John Holles 2nd Earl de Clare 1595-1666 7 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Anne Stanhope Countess de Clare 1576-1651 
6 x Great Grand Daughter of King Edward III of England
Great x 2 Grandfather: Gilbert Holles 3rd Earl de Clare 1633-1689 8 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Horace de Vere 1st Baron Vere 
7 x Great Grand Son of King Edward I of England
Great x 3 Grandmother: Elizabeth Vere Countess Clare 8 x Great Grand Daughter of King Edward I of England
Great x 4 Grandmother: Mary Tracy Baroness Spencer Tilbury 1581-1671
Great x 1 Grandfather: John Holles 1st Duke Newcastle upon Tyne 9 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Robert Pierrepont 1st Earl Kingston 
9 x Great Grand Son of King Edward I of England
Great x 3 Grandfather: William Pierrepont of Thoresby 8 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Gertrude Talbot Baroness Pierrepont Holme Pierrepoint 
7 x Great Grand Daughter of King Edward III of England
Great x 2 Grandmother: Grace Pierrepont Countess de Clare 1633-1702 9 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Thomas Harries aka Harris 1st Baronet
Great x 3 Grandmother: Elizabeth Harries aka Harris
Great x 4 Grandmother: Eleanor Gifford
GrandMother: Henrietta Cavendish Holles Countess of Oxford and Mortimer 1694-1755 7 x Great Grand Daughter of King Edward IV of England
Great x 4 Grandfather: Charles Cavendish 1553-1617 
8 x Great Grand Son of King Edward I of England
Great x 3 Grandfather: William Cavendish 1st Duke Newcastle upon Tyne 4 x Great Grand Son of King Edward IV of England
Great x 4 Grandmother: Catherine Ogle 8th Baroness Ogle 3 x Great Grand Daughter of King Edward IV of England
Great x 2 Grandfather: Henry Cavendish 2nd Duke Newcastle upon Tyne 5 x Great Grand Son of King Edward IV of England
Great x 4 Grandfather: William Bassett 
11 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandmother: Elizabeth Bassett Countess Newcastle upon Tyne 12 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 1 Grandmother: Margaret Cavendish Duchess Newcastle upon Tyne 1661-1716 6 x Great Grand Daughter of King Edward IV of England
Great x 4 Grandfather: Robert Pierrepont 1st Earl Kingston 9 x Great Grand Son of King Edward I of England
Great x 3 Grandfather: William Pierrepont of Thoresby 8 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Gertrude Talbot Baroness Pierrepont Holme Pierrepoint 7 x Great Grand Daughter of King Edward III of England
Great x 2 Grandmother: Frances Pierrepont Duchess Newcastle upon Tyne 9 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Thomas Harries aka Harris 1st Baronet
Great x 3 Grandmother: Elizabeth Harries aka Harris
Great x 4 Grandmother: Eleanor Gifford