Paternal Family Tree: Hervey
Maternal Family Tree: Margaretta Green
Before 1753 [his father] Frederick Augustus Hervey 4th Earl Bristol (age 22) and [his mother] Elizabeth Davers Countess Bristol (age 19) were married.
On 02 Oct 1769 Frederick William Hervey 1st Marquess Bristol was born to Frederick Augustus Hervey 4th Earl Bristol (age 39) and Elizabeth Davers Countess Bristol (age 36).
On 23 Dec 1779 [his uncle] Augustus John Hervey 3rd Earl Bristol (age 55) died due to a gout in the stomach in St James' Square. His brother [his father] Frederick Augustus Hervey 4th Earl Bristol (age 49) succeeded 4th Earl Bristol. [his mother] Elizabeth Davers Countess Bristol (age 46) by marriage Countess Bristol.
On 16 Apr 1785 Clotworthy Upton 1st Baron Templetown (age 64) died. His son [his future brother-in-law] John Upton 2nd Baron Templetown (age 13) succeeded 2nd Baron Templetown of Templetown in Antrim.
In 1786 Frederick William Hervey 1st Marquess Bristol (age 16) was educated at St John's College, Oxford University.
Before 29 Dec 1798 Frederick William Hervey 1st Marquess Bristol (age 29) and Elizabeth Albana Upton (age 23) were married. He the son of Frederick Augustus Hervey 4th Earl Bristol (age 68) and Elizabeth Davers Countess Bristol (age 65).
On 22 Dec 1799 [his daughter] Augusta Hervey was born to Frederick William Hervey 1st Marquess Bristol (age 30) and [his wife] Elizabeth Albana Upton (age 24).
In 1800 John Hoppner (age 41). Portrait of Frederick William Hervey 1st Marquess Bristol (age 30).
On 15 Jul 1800 [his son] Frederick Hervey 2nd Marquess of Bristol was born to Frederick William Hervey 1st Marquess Bristol (age 30) and [his wife] Elizabeth Albana Upton (age 25) at Portland Place, Marylebone.
On 19 Dec 1800 [his mother] Elizabeth Davers Countess Bristol (age 67) died.
On 08 Sep 1801 [his daughter] Georgiana Elizabeth Charlotte Hervey was born to Frederick William Hervey 1st Marquess Bristol (age 31) and [his wife] Elizabeth Albana Upton (age 26).
On 25 Jan 1803 [his son] Major George Hervey was born to Frederick William Hervey 1st Marquess Bristol (age 33) and [his wife] Elizabeth Albana Upton (age 28).
On 08 Jul 1803 [his father] Frederick Augustus Hervey 4th Earl Bristol (age 72) died in Lazio. His son Frederick William Hervey 1st Marquess Bristol (age 33) succeeded 5th Earl Bristol.
In 1805 Frederick William Hervey 1st Marquess Bristol (age 35) was elected Fellow of the Royal Society.
On 27 Sep 1805 [his son] William Hervey was born to Frederick William Hervey 1st Marquess Bristol (age 35) and [his wife] Elizabeth Albana Upton (age 30).
In 1806 [his brother-in-law] John Upton 2nd Baron Templetown (age 34) was created 1st Viscount Templetown in Antrim.
On 20 Aug 1808 [his son] Bishop Arthur Hervey was born to Frederick William Hervey 1st Marquess Bristol (age 38) and [his wife] Elizabeth Albana Upton (age 33).
On 26 Apr 1811 [his daughter] Sophia Elizabeth Caroline Hervey was born to Frederick William Hervey 1st Marquess Bristol (age 41) and [his wife] Elizabeth Albana Upton (age 36).
On 01 Nov 1814 [his son] Charles Amelius Hervey was born to Frederick William Hervey 1st Marquess Bristol (age 45) and [his wife] Elizabeth Albana Upton (age 39).
On 25 Jun 1816 [his son] Alfred Hervey was born to Frederick William Hervey 1st Marquess Bristol (age 46) and [his wife] Elizabeth Albana Upton (age 41).
Before Oct 1824 [his brother-in-law] John Upton 2nd Baron Templetown (age 52) and Mary Montagu (age 50) were married. She by marriage Viscountess Templetown in Antrim. She the daughter of John Montagu 5th Earl Sandwich and Maria Henrietta Powlett.
In 1826 Frederick William Hervey 1st Marquess Bristol (age 56) was created 1st Marquess of Bristol, 1st Earl Jermyn of Horningworth in Suffolk.
On 01 Dec 1830 [his son] Frederick Hervey 2nd Marquess of Bristol (age 30) and [his daughter-in-law] Katherine Isabella Manners (age 21) were married. She the daughter of John Henry Manners 5th Duke Rutland (age 52) and Elizabeth Howard Duchess Rutland. He the son of Frederick William Hervey 1st Marquess of Bristol (age 61) and Elizabeth Albana Upton (age 55).
On 18 Sep 1832 [his son-in-law] Frederick Charles William Seymour (age 35) and [his daughter] Augusta Hervey (age 32) were married. She the daughter of Frederick William Hervey 1st Marquess of Bristol (age 62) and Elizabeth Albana Upton (age 57). He a great x 3 grandson of King James II of England Scotland and Ireland. 
In Jul 1836 [his son-in-law] John Grey (age 24) and [his daughter] Georgiana Elizabeth Charlotte Hervey (age 34) were married. She the daughter of Frederick William Hervey 1st Marquess of Bristol (age 66) and Elizabeth Albana Upton (age 61). He the son of Charles Grey 2nd Earl Grey (age 72) and Mary Elizabeth Ponsonby Countess Grey (age 60).
On 03 Feb 1838 [his son] Major George Hervey (age 35) died.
On 15 Aug 1839 [his son] Charles Amelius Hervey (age 24) and [his daughter-in-law] Harriet Charlotte Sophia Ryder were married. She the daughter of Dudley Ryder 1st Earl of Harrowby (age 76) and Susanna Leveson-Gower Countess Harrowby Lincolnshire. He the son of Frederick William Hervey 1st Marquess of Bristol (age 69) and Elizabeth Albana Upton (age 64).
In 1844 [his wife] Elizabeth Albana Upton (age 69) died.
Before 03 Mar 1846 [his former brother-in-law] Fulke Greville Upton (age 72) and Mary Howard were married.
On 03 Mar 1846 [his former brother-in-law] Fulke Greville Upton (age 72) died.
On 21 Sep 1846 [his former brother-in-law] John Upton 2nd Baron Templetown (age 74) died.
On 06 May 1850 [his son] William Hervey (age 44) died.
On 15 Feb 1859 Frederick William Hervey 1st Marquess Bristol (age 89) died. His son [his son] Frederick Hervey 2nd Marquess of Bristol (age 58) succeeded 2nd Marquess of Bristol, 2nd Earl Jermyn of Horningworth in Suffolk, 6th Earl Bristol.
Kings Wessex: Great x 22 Grand Son of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 20 Grand Son of Owain "Great" King Gwynedd
Kings Seisyllwg: Great x 25 Grand Son of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 21 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 18 Grand Son of William "Lion" I King Scotland
Kings Franks: Great x 18 Grand Son of Louis VII King Franks
Kings France: Great x 14 Grand Son of Philip "The Fair" IV King France
Great x 3 Grandfather: William Hervey
Great x 2 Grandfather: Thomas Hervey
Great x 4 Grandfather: Robert Jermyn
Great x 3 Grandmother: Susan Jermyn
Great x 4 Grandmother: Judith Blagge
Great x 1 Grandfather: John Hervey 1st Earl Bristol
GrandFather: John Hervey 2nd Baron Hervey 10 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Henry Felton 1st Baronet 8 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Henry Felton 2nd Baronet 9 x Great Grand Son of King Edward III of England
Great x 2 Grandfather: Thomas Felton 4th Baronet 8 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Lionel Tollemache 2nd Baronet
8 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Susanna Tollemache Lady Felton 7 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Elizabeth Stanhope Lady Talmash
6 x Great Grand Daughter of King Edward III of England
Great x 1 Grandmother: Elizabeth Felton Countess Bristol 9 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Theophilus Howard 2nd Earl Suffolk 8 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: James Howard 3rd Earl Suffolk 9 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Elizabeth Home Countess Suffolk 18 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 2 Grandmother: Elizabeth Howard Lady Felton 10 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Edward Villiers
Great x 3 Grandmother: Barbara Villiers Countess Suffolk 9 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Barbara St John
8 x Great Grand Daughter of King Edward III of England
Father: Frederick Augustus Hervey 4th Earl Bristol 11 x Great Grand Son of King Edward III of England
Great x 1 Grandfather: Nicholas Wedig Lepell
GrandMother: Mary Lepell Baroness Hervey
Frederick William Hervey 1st Marquess of Bristol 12 x Great Grand Son of King Edward III of England
Great x 2 Grandfather: Robert Davers 1st Baronet
Great x 1 Grandfather: Robert Davers 2nd Baronet
GrandFather: Jermyn Davers 4th Baronet
Great x 4 Grandfather: Thomas Jermyn
Great x 3 Grandfather: Thomas Jermyn
Great x 4 Grandmother: Catherine Killigrew
Great x 2 Grandfather: Thomas Jermyn 2nd Baron Jermyn
Great x 1 Grandmother: Mary Jermyn Lady Davers
Great x 3 Grandfather: Henry Merry
Great x 2 Grandmother: Mary Merry Baroness Jermyn
Mother: Elizabeth Davers Countess Bristol
Great x 1 Grandfather: Edward Green Rector Drinkstone
GrandMother: Margaretta Green