Biography of George Augustus Herbert 11th Earl Pembroke 8th Earl Montgomery 1759-1827
Paternal Family Tree: Herbert
Maternal Family Tree: Elizabeth Trevor Duchess Marlborough 1713-1761
On 09 Jan 1749 [his grandfather] Henry Herbert 6th Earl Montgomery 9th Earl Pembroke (age 55) died at Pembroke House Whitehall Palace. His son [his father] Henry Herbert 10th Earl Pembroke 7th Earl Montgomery (age 14) succeeded 10th Earl Pembroke, 7th Earl Montgomery.
On 23 Mar 1756 [his father] Henry Herbert 10th Earl Pembroke 7th Earl Montgomery (age 21) and [his mother] Elizabeth Spencer Countess Pembroke and Montgomery (age 19) were married. She by marriage Countess Pembroke, Countess Montgomery. She the daughter of Charles Spencer 3rd Duke Marlborough (age 49) and Elizabeth Trevor Duchess Marlborough (age 43). He the son of Henry Herbert 6th Earl Montgomery 9th Earl Pembroke and Mary Fitzwilliam Countess Pembroke and Montgomery (age 48).
On 10 Sep 1759 George Augustus Herbert 11th Earl Pembroke 8th Earl Montgomery was born to Henry Herbert 10th Earl Pembroke 7th Earl Montgomery (age 25) and Elizabeth Spencer Countess Pembroke and Montgomery (age 22) at Wilton House.
On 26 Feb 1783 [his future brother-in-law] George Richard St John 4th Viscount St John 3rd Viscount Bolingbroke (age 21) and Charlotte Collins were married.
On 05 May 1787 Frederick St John 3rd Viscount St John 2nd Viscount Bolingbroke (age 54) died. His son [his future brother-in-law] George Richard St John 4th Viscount St John 3rd Viscount Bolingbroke (age 26) succeeded 4th Viscount St John, 3rd Viscount Bolingbroke, 7th Baronet St John Lydiard Tregoze in Wiltshire.
In 1788 [his son] George Herbert was born to George Augustus Herbert 11th Earl Pembroke 8th Earl Montgomery (age 28) and [his future wife] Elisabeth Beauclerk (age 21). He a great x 3 grandson of King Charles II of England Scotland and Ireland. Coefficient of inbreeding 6.26%. 
On 08 Dec 1788 [his future brother-in-law] Frederick St John (age 22) and Mary Kerr (age 21) were married. She the daughter of William John Kerr 5th Marquess Lothian (age 51) and Elizabeth Fortescue 5th Marchioness Lothian. She a great x 5 granddaughter of King James I of England and Ireland and VI of Scotland. 
In 1790 [his daughter] Diana Herbert Countess Normanton was born to George Augustus Herbert 11th Earl Pembroke 8th Earl Montgomery (age 30) and [his future wife] Elisabeth Beauclerk (age 23). She a great x 3 granddaughter of King Charles II of England Scotland and Ireland. Coefficient of inbreeding 6.26%.
On 19 Sep 1791 [his son] Robert Henry Herbert 12th Earl Pembroke 9th Earl Montgomery was born to George Augustus Herbert 11th Earl Pembroke 8th Earl Montgomery (age 32) and [his future wife] Elisabeth Beauclerk (age 25). He a great x 3 grandson of King Charles II of England Scotland and Ireland. Coefficient of inbreeding 6.26%.
In 1793 [his son] George Herbert (age 5) died.
In 1793 [his son] Charles Herbert was born to George Augustus Herbert 11th Earl Pembroke 8th Earl Montgomery (age 33) and [his future wife] Elisabeth Beauclerk (age 26). He a great x 3 grandson of King Charles II of England Scotland and Ireland. Coefficient of inbreeding 6.26%.
On 25 Mar 1793 [his future wife] Elisabeth Beauclerk (age 26) died.
On 06 Apr 1793 [his future brother-in-law] Frederick St John (age 27) and Arabella Craven were married. She the daughter of William Craven 6th Baron Craven and Elizabeth Berkeley Margrave Brandenburg Ansbach (age 42). She a great x 3 granddaughter of King Charles II of England Scotland and Ireland. 
On 26 Jan 1794 [his father] Henry Herbert 10th Earl Pembroke 7th Earl Montgomery (age 59) died. His son George Augustus Herbert 11th Earl Pembroke 8th Earl Montgomery (age 34) succeeded 11th Earl Pembroke8th Earl Montgomery.
On 08 Apr 1797 George Augustus Herbert 11th Earl Pembroke 8th Earl Montgomery (age 37) and Elisabeth Beauclerk were married. He the son of Henry Herbert 10th Earl Pembroke 7th Earl Montgomery and Elizabeth Spencer Countess Pembroke and Montgomery (age 60). They were first cousins. She a great x 2 granddaughter of King Charles II of England Scotland and Ireland.
In 1798 [his son] Charles Herbert (age 5) died.
On 01 Aug 1804 [his former brother-in-law] George Richard St John 4th Viscount St John 3rd Viscount Bolingbroke (age 43) and Isabella Charlotte Hompesch Baroness von Hompesch (age 28) were married at Trinity Church, Manhattan.
In 1805 King George III of Great Britain and Ireland (age 66) created new Garter Knights as follows:
628th George Augustus Herbert 11th Earl Pembroke 8th Earl Montgomery (age 45),
629th George Finch 9th Earl Winchilsea 4th Earl Nottingham (age 52),
630th Philip Stanhope 5th Earl Chesterfield (age 49),
631st George Legge 3rd Earl Dartmouth (age 49).
On 25 Jan 1808 George Augustus Herbert 11th Earl Pembroke 8th Earl Montgomery (age 48) and Yekaterina Semyonovna Vorontsova Countess Pembroke and Montgomery (age 23) were married. She by marriage Countess Pembroke, Countess Montgomery. The difference in their ages was 25 years. He the son of Henry Herbert 10th Earl Pembroke 7th Earl Montgomery and Elizabeth Spencer Countess Pembroke and Montgomery (age 70).
In 1809 [his daughter] Elizabeth Herbert was born to George Augustus Herbert 11th Earl Pembroke 8th Earl Montgomery (age 49) and [his wife] Yekaterina Semyonovna Vorontsova Countess Pembroke and Montgomery (age 24).
On 16 Sep 1810 [his son] Sidney Herbert 1st Baron Herbert Lea was born to George Augustus Herbert 11th Earl Pembroke 8th Earl Montgomery (age 51) and [his wife] Yekaterina Semyonovna Vorontsova Countess Pembroke and Montgomery (age 25).
In 1813 [his daughter] Mary Herbert Marchioness Ailesbury was born to George Augustus Herbert 11th Earl Pembroke 8th Earl Montgomery (age 53) and [his wife] Yekaterina Semyonovna Vorontsova Countess Pembroke and Montgomery (age 28).
On 31 Oct 1814 [his daughter] Catherine Herbert Countess Dunmore was born to George Augustus Herbert 11th Earl Pembroke 8th Earl Montgomery (age 55) and [his wife] Yekaterina Semyonovna Vorontsova Countess Pembroke and Montgomery (age 30).
In 1817 [his daughter] Georgiana Herbert was born to George Augustus Herbert 11th Earl Pembroke 8th Earl Montgomery (age 57) and [his wife] Yekaterina Semyonovna Vorontsova Countess Pembroke and Montgomery (age 32).
Before 17 Sep 1818 [his son-in-law] Welbore Ellis Agar 2nd Earl Normanton (age 40) and [his daughter] Diana Herbert Countess Normanton (age 28) were married. She by marriage Countess Normanton. She the daughter of George Augustus Herbert 11th Earl Pembroke 8th Earl Montgomery (age 59) and Elisabeth Beauclerk. He the son of Charles Agar 1st Earl Normanton and Jane Benson Countess Northampton. She a great x 3 granddaughter of King Charles II of England Scotland and Ireland. 
In 1819 [his daughter] Emma Herbert Viscountess Vesci was born to George Augustus Herbert 11th Earl Pembroke 8th Earl Montgomery (age 59) and [his wife] Yekaterina Semyonovna Vorontsova Countess Pembroke and Montgomery (age 34).
On 14 Nov 1821 [his former brother-in-law] Frederick St John (age 55) and Caroline Parsons were married.
On 11 Dec 1824 [his former brother-in-law] George Richard St John 4th Viscount St John 3rd Viscount Bolingbroke (age 63) died at Pisa. His son Henry St John 4th Viscount Bolingbroke 5th Viscount St John (age 38) succeeded 5th Viscount St John, 4th Viscount Bolingbroke, 8th Baronet St John Lydiard Tregoze in Wiltshire. Maria St John-Mildmay Viscountess Bolingbroke and St John (age 34) by marriage Viscountess St John, Viscountess Bolingbroke.
On 26 Oct 1827 George Augustus Herbert 11th Earl Pembroke 8th Earl Montgomery (age 68) died. His son [his son] Robert Henry Herbert 12th Earl Pembroke 9th Earl Montgomery (age 36) succeeded 12th Earl Pembroke, 9th Earl Montgomery.
On 27 Mar 1856 [his former wife] Yekaterina Semyonovna Vorontsova Countess Pembroke and Montgomery (age 71) died.
Kings Wessex: Great x 21 Grand Son of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 18 Grand Son of Owain "Great" King Gwynedd
Kings Seisyllwg: Great x 24 Grand Son of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 19 Grand Son of Maredudd ap Bleddyn King Powys
Kings England: Great x 12 Grand Son of King Edward III of England
Kings Scotland: Great x 16 Grand Son of William "Lion" I King Scotland
Kings Franks: Great x 17 Grand Son of Louis VII King Franks
Kings France: Great x 14 Grand Son of Philip "The Fair" IV King France
Great x 4 Grandfather: Henry Herbert 2nd Earl Pembroke 6 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Philip Herbert 4th Earl Pembroke 1st Earl Montgomery 7 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Mary Sidney Countess Pembroke
9 x Great Grand Daughter of King Edward "Longshanks" I of England
Great x 2 Grandfather: Philip Herbert 5th Earl Pembroke 2nd Earl Montgomery 8 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Edward de Vere 17th Earl of Oxford
7 x Great Grand Son of King Edward "Longshanks" I of England
Great x 3 Grandmother: Susan Vere Countess Montgomery 8 x Great Grand Daughter of King Edward "Longshanks" I of England
Great x 4 Grandmother: Anne Cecil Countess of Oxford
12 x Great Grand Daughter of King John "Lackland" of England
Great x 1 Grandfather: Thomas Herbert 8th Earl Pembroke 5th Earl Montgomery 9 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: George Villiers of Brokesby
Great x 3 Grandfather: William Villiers 1st Baronet
Great x 4 Grandmother: Audrey Saunders
Great x 2 Grandmother: Catherine Villiers Countess Pembroke and Montgomery
Great x 3 Grandmother: Rebecca Roper Lady Villiers
GrandFather: Henry Herbert 6th Earl Montgomery 9th Earl Pembroke 10 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Edmund Sawyer of Heywood Lodge in White Waltham in Berkshire
Great x 2 Grandfather: Robert Sawyer
Great x 1 Grandmother: Margaret Sawyer Countess Pembroke and Montgomery
Father: Henry Herbert 10th Earl Pembroke 7th Earl Montgomery 11 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Thomas Fitzwilliam 1st Viscount Fitzwilliam
Great x 3 Grandfather: William Fitzwilliam 3rd Viscount Fitzwilliam 12 x Great Grand Son of King Edward "Longshanks" I of England
Great x 4 Grandmother: Margaret Plunkett 11 x Great Grand Daughter of King Edward "Longshanks" I of England
Great x 2 Grandfather: Thomas Fitzwilliam 4th Viscount Fitzwilliam 13 x Great Grand Son of King Edward "Longshanks" I of England
Great x 1 Grandfather: Richard Fitzwilliam 5th Viscount Fitzwilliam 14 x Great Grand Son of King Edward "Longshanks" I of England
GrandMother: Mary Fitzwilliam Countess Pembroke and Montgomery 10 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: John Shelley of Mitchelgrove 1st Baronet 12 x Great Grand Son of King John "Lackland" of England
Great x 3 Grandfather: Charles Shelley 2nd Baronet 13 x Great Grand Son of King Edward "Longshanks" I of England
Great x 4 Grandmother: Jane Reresby 12 x Great Grand Daughter of King Edward "Longshanks" I of England
Great x 2 Grandfather: John Shelley 3rd Baronet 14 x Great Grand Son of King Edward "Longshanks" I of England
Great x 4 Grandfather: Benjamin Weston
Great x 3 Grandmother: Elizabeth Weston
Great x 4 Grandmother: Elizabeth Sheldon Countess Anglesey
Great x 1 Grandmother: Frances Shelley Viscountess Fitzwilliam 9 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Henry Neville 9th and 7th Baron Bergavenny
6 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: George Neville 11th and 9th Baron Bergavenny 7 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Catherine Vaux Baroness Bergavenny
8 x Great Grand Daughter of King Edward III of England
Great x 2 Grandmother: Winifred Neville Lady Shelley 8 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Thomas Gifford
Great x 3 Grandmother: Mary Gifford Baroness Bergavenny
George Augustus Herbert 11th Earl Pembroke 8th Earl Montgomery 12 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: William Spencer 2nd Baron Spencer 8 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Henry Spencer 1st Earl of Sunderland 8 x Great Grand Son of Henry IV King England
Great x 4 Grandmother: Penelope Wriothesley Baroness Spencer Wormleighton
7 x Great Grand Daughter of Henry IV King England
Great x 2 Grandfather: Robert Spencer 2nd Earl of Sunderland 9 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Robert Sidney 2nd Earl of Leicester 10 x Great Grand Son of King Edward "Longshanks" I of England
Great x 3 Grandmother: Dorothy Sidney Countess Sunderland 8 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Dorothy Percy Countess Leicester 7 x Great Grand Daughter of King Edward III of England
Great x 1 Grandfather: Charles Spencer 3rd Earl of Sunderland 10 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: John Digby 1st Earl Bristol
7 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: George Digby 2nd Earl Bristol 8 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Beatrice Walcott
Great x 2 Grandmother: Anne Digby Countess Sunderland 9 x Great Grand Daughter 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: Anne Russell Countess Bristol 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
GrandFather: Charles Spencer 3rd Duke Marlborough 11 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Winston Churchill
Great x 2 Grandfather: John Churchill 1st Duke Marlborough 14 x Great Grand Son of King Edward "Longshanks" I of England
Great x 4 Grandfather: John Drake
Great x 3 Grandmother: Elizabeth Drake 13 x Great Grand Daughter of King Edward "Longshanks" I of England
Great x 4 Grandmother: Helen Boteler 12 x Great Grand Daughter of King Edward "Longshanks" I of England
Great x 1 Grandmother: Anne Churchill Countess Sunderland 15 x Great Grand Daughter of King Edward "Longshanks" I of England
Great x 4 Grandfather: John Jennings
Great x 3 Grandfather: Richard Jennings
Great x 2 Grandmother: Sarah Jennings Duchess Marlborough
Great x 4 Grandfather: Gifford Thornhurst 1st Baronet
Great x 3 Grandmother: Frances Thornhurst
Great x 4 Grandmother: Susanna Temple
Mother: Elizabeth Spencer Countess Pembroke and Montgomery 12 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: John Trevor
Great x 3 Grandfather: John Trevor
Great x 2 Grandfather: Thomas Trevor 1st Baron Trevor Bromham
Great x 1 Grandfather: Thomas Trevor 2nd Baron Trevor Bromham
Great x 2 Grandmother: Elizabeth Searle
GrandMother: Elizabeth Trevor Duchess Marlborough