Biography of William Cavendish-Bentinck 3rd Duke Portland 1738-1809

Paternal Family Tree: Bentinck

Maternal Family Tree: Eleanor Gifford 1575

On 04 Jul 1726 [his grandfather] Henry Bentinck 1st Duke Portland (age 44) died in Spanish Town Jamaica. His body was returned to England. On 03 Nov 1726 he was buried in the Duke of Ormonde Vault, King Henry VII Chapel, Westminster Abbey. His son [his father] William Bentinck 2nd Duke Portland (age 17) succeeded 2nd Duke Portland, 3rd Earl of Portland.

On 11 Jun 1734 [his father] William Bentinck 2nd Duke Portland (age 25) and [his mother] Margaret Cavendish Harley 2nd Duchess Portland (age 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 (age 45) and [his grandmother] Henrietta Cavendish Holles Countess of Oxford and Mortimer (age 40). He the son of [his grandfather] Henry Bentinck 1st Duke Portland and [his grandmother] Elizabeth Noel Duchess Portland (age 46).

On 14 Apr 1738 William Cavendish-Bentinck 3rd Duke Portland was born to William Bentinck 2nd Duke Portland (age 29) and Margaret Cavendish Harley 2nd Duchess Portland (age 23) at Welbeck Abbey, Nottinghamshire [Map].

On 01 May 1762 [his father] William Bentinck 2nd Duke Portland (age 53) died. His son William Cavendish-Bentinck 3rd Duke Portland (age 24) succeeded 3rd Duke Portland, 4th Earl of Portland.

On 08 Nov 1766 William Cavendish-Bentinck 3rd Duke Portland (age 28) and Dorothy Cavendish 3rd Duchess Portland (age 16) were married. She 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 (age 51). They were half fourth cousins.

On 23 Jun 1768 [his son] William Henry Cavendish-Scott-Bentinck 4th Duke Portland was born to William Cavendish-Bentinck 3rd Duke Portland (age 30) and [his wife] Dorothy Cavendish 3rd Duchess Portland (age 17).

On 07 Jun 1774 [his brother-in-law] William Cavendish 5th Duke Devonshire (age 26) and Georgiana Spencer Duchess Devonshire (age 17) were married in St Mary's Church, Wimbledon. It was her 17th birthday. She by marriage Duchess Devonshire. She the daughter of John Spencer 1st Earl Spencer (age 39) and Margaret Georgiana Poyntz Countess Spencer (age 37). He the son of William Cavendish 4th Duke Devonshire and Charlotte Elizabeth Boyle Marchioness Hartington. They were fourth cousins.

On 14 Sep 1774 [his son] William Henry Cavendish-Bentinck was born to William Cavendish-Bentinck 3rd Duke Portland (age 36) and [his wife] Dorothy Cavendish 3rd Duchess Portland (age 24).

On 03 Oct 1775 [his daughter] Charlotte Cavendish-Bentinck was born to William Cavendish-Bentinck 3rd Duke Portland (age 37) and [his wife] Dorothy Cavendish 3rd Duchess Portland (age 25).

On 13 Mar 1779 [his daughter] Mary Cavendish-Bentinck was born to William Cavendish-Bentinck 3rd Duke Portland (age 40) and [his wife] Dorothy Cavendish 3rd Duchess Portland (age 28).

On 20 May 1780 [his son] Charles Cavendish-Bentinck was born to William Cavendish-Bentinck 3rd Duke Portland (age 42) and [his wife] Dorothy Cavendish 3rd Duchess Portland (age 29).

On 02 Nov 1781 [his son] Frederick Cavendish-Bentinck was born to William Cavendish-Bentinck 3rd Duke Portland (age 43) and [his wife] Dorothy Cavendish 3rd Duchess Portland (age 31).

On 27 Feb 1782 [his brother-in-law] George Augustus Henry Cavendish 1st Earl Burlington (age 27) and Elizabeth Compton Countess Burlington (age 21) were married at London. She by marriage Countess Burlington. She the daughter of Charles Compton 7th Earl of Northampton and Anne Somerset Countess Northampton. He the son of William Cavendish 4th Duke Devonshire and Charlotte Elizabeth Boyle Marchioness Hartington. They were fourth cousins.

On 17 Jul 1785 [his mother] Margaret Cavendish Harley 2nd Duchess Portland (age 70) died.

1794 Creation of Garter Knights

                    In 1794 King George III of Great Britain and Ireland (age 55) created new Garter Knights as follows:
                
                    617th Henry Scott 3rd Duke Buccleuch (age 47),
                
                    618th William Frederick Hanover 2nd Duke Gloucester and Edinburgh (age 17),
                
                    619th William Cavendish-Bentinck 3rd Duke Portland (age 55).

On 03 Jun 1794 [his wife] Dorothy Cavendish 3rd Duchess Portland (age 43) died.

On 04 Aug 1795 [his son] William Henry Cavendish-Scott-Bentinck 4th Duke Portland (age 27) and [his daughter-in-law] Henrietta Scott Duchess Portland (age 21) were married. She by marriage Duchess Portland. He the son of William Cavendish-Bentinck 3rd Duke Portland (age 57) and [his former wife] Dorothy Cavendish 3rd Duchess Portland.

On 19 Feb 1803 [his son] William Henry Cavendish-Bentinck (age 28) and [his daughter-in-law] Mary Acheson (age 16) were married. She the daughter of Arthur Acheson 1st Earl Gosford (age 58) and Millicent Pole Countess Gosford (age 53). He the son of William Cavendish-Bentinck 3rd Duke Portland (age 64) and [his former wife] Dorothy Cavendish 3rd Duchess Portland.

On 31 Mar 1807 William Cavendish-Bentinck 3rd Duke Portland (age 68) was appointed Prime Minister.

On 21 Sep 1808 [his son] Charles Cavendish-Bentinck (age 28) and [his daughter-in-law] Georgiana Augusta Frederica Seymour (age 26) were married. She the daughter of King George IV of Great Britain and Ireland (age 46) and Grace Elliott. He the son of William Cavendish-Bentinck 3rd Duke Portland (age 70) and [his former wife] Dorothy Cavendish 3rd Duchess Portland.

In 1809 [his former brother-in-law] William Cavendish 5th Duke Devonshire (age 61) and Elizabeth Christiana Hervey Duchess Devonshire (age 51) were married. She by marriage Duchess Devonshire. She the daughter of Frederick Augustus Hervey 4th Earl Bristol and Elizabeth Davers Countess Bristol. He the son of William Cavendish 4th Duke Devonshire and Charlotte Elizabeth Boyle Marchioness Hartington.

On 30 Oct 1809 William Cavendish-Bentinck 3rd Duke Portland (age 71) died. His son [his son] William Henry Cavendish-Scott-Bentinck 4th Duke Portland (age 41) succeeded 4th Duke Portland, 5th Earl of Portland.

1814. Benjamin West (age 75). Portrait of William Cavendish-Bentinck 3rd Duke Portland.

Ancestors of William Cavendish-Bentinck 3rd Duke Portland 1738-1809

Great x 1 Grandfather: William Bentinck 1st Earl of Portland

GrandFather: Henry Bentinck 1st Duke Portland 11 x Great Grand Son of King Edward III of England

Great x 4 Grandfather: George Villiers of Brokesby

Great x 3 Grandfather: Edward Villiers

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 7 x Great Grand Son of King Edward III of England

Great x 3 Grandmother: Barbara St John 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 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 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 15 x Great Grand Daughter of King John "Lackland" of England

Great x 4 Grandmother: Elizabeth Gordon Countess Dunbar 14 x Great Grand Daughter of King John "Lackland" of England

Father: William Bentinck 2nd Duke Portland 11 x Great Grand Son of King Henry IV of England

Great x 4 Grandfather: Edward Noel 2nd Viscount Campden

Great x 3 Grandfather: Baptist Noel 3rd Viscount Campden

Great x 4 Grandmother: Juliana Hicks Viscountess Campden

Great x 2 Grandfather: Edward Noel 1st Earl Gainsborough

Great x 4 Grandfather: Thomas Wotton 2nd Baron Wotton

Great x 3 Grandmother: Hester Wotton Viscountess Campden

Great x 1 Grandfather: Wriothesley Baptist Noel 2nd Earl Gainsborough 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 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

Great x 3 Grandmother: Elizabeth Leigh Countess Southampton 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 10 x Great Grand Daughter of King Henry IV of England

Great x 4 Grandfather: Fulk Greville 7 x Great Grand Son of King Edward III of England

Great x 3 Grandfather: Robert Greville 2nd Baron Brooke 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 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 "Lackland" of England

Great x 3 Grandmother: Catherine Russell Baroness Brooke 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

Great x 3 Grandfather: Francis Dashwood

Great x 2 Grandmother: Sarah Dashwood Baroness Brooke

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

Great x 3 Grandfather: Robert Harley 10 x Great Grand Son of King John "Lackland" of England

Great x 4 Grandmother: Margaret Corbet 9 x Great Grand Daughter of King John "Lackland" of England

Great x 2 Grandfather: Edward Harley 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

Great x 3 Grandfather: Thomas Foley

Great x 4 Grandmother: Alice Brindley

Great x 2 Grandfather: Thomas Foley

Great x 1 Grandmother: Elizabeth Foley Countess of Oxford and Mortimer

Mother: Margaret Cavendish Harley 2nd Duchess Portland 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 7 x Great Grand Son of King Edward III of England

Great x 4 Grandmother: Anne Stanhope Countess de Clare 6 x Great Grand Daughter of King Edward III of England

Great x 2 Grandfather: Gilbert Holles 3rd Earl de Clare 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

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 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 7 x Great Grand Daughter of King Edward IV of England

Great x 4 Grandfather: Charles Cavendish 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 6 x Great Grand Daughter of King Edward IV of England