On 16 May 1791 [her father] Henry Charles Somerset 6th Duke Beaufort (age 24) and [her mother] Charlotte Sophia Leveson-Gower Duchess Beaufort 1771-1854 (age 20) were married at St Mary's Church Lambeth Palace [Map]. She the daughter of Granville Leveson-Gower 1st Marquess Stafford (age 69) and Susanna Stewart Marchioness Stafford -1805. He the son of Henry Somerset 5th Duke Beaufort (age 46) and Elizabeth Boscawen Duchess Beaufort 1747-1828 (age 43).
On 11 Oct 1803 [her grandfather] Henry Somerset 5th Duke Beaufort (age 58) died. He was buried at St Michael and all Angels Church, Badminton. His son [her father] Henry Charles Somerset 6th Duke Beaufort (age 36) succeeded 6th Duke Beaufort, 8th Marquess Worcester, 12th Earl Worcester, 6th Baron Botetort. [her mother] Charlotte Sophia Leveson-Gower Duchess Beaufort 1771-1854 (age 32) by marriage Duchess Beaufort.
On 18 Aug 1811 Harriet Blanche Somerset Countess Galloway was born to Henry Charles Somerset 6th Duke Beaufort (age 44) and Charlotte Sophia Leveson-Gower Duchess Beaufort 1771-1854 (age 40).
On 18 Dec 1823 William Duncombe 2nd Baron Feversham (age 25) and [her future sister-in-law] Louisa Stewart Baroness Feversham Duncombe Park (age 19) were married. She the daughter of George Stewart 8th Earl Galloway 1768-1834 (age 55) and Jane Paget Countess Galloway 1774-1842 (age 49).
On 09 Aug 1833 Randolph Stewart 9th Earl Galloway 1800-1873 (age 33) and Harriet Blanche Somerset Countess Galloway (age 21) were married. She the daughter of Henry Charles Somerset 6th Duke Beaufort (age 66) and Charlotte Sophia Leveson-Gower Duchess Beaufort 1771-1854 (age 62). He the son of George Stewart 8th Earl Galloway 1768-1834 (age 65) and Jane Paget Countess Galloway 1774-1842 (age 58). They were second cousins.
On 27 Mar 1834 [her father-in-law] George Stewart 8th Earl Galloway 1768-1834 (age 66) died. His son [her husband] Randolph Stewart 9th Earl Galloway 1800-1873 (age 34) succeeded 9th Earl Galloway, 8th Baronet Stewart of Corsewall, 7th Baronet Stewart of Burray in Orkney. Harriet Blanche Somerset Countess Galloway (age 22) by marriage Countess Galloway.
On 21 Oct 1835 [her son] Alan Stewart 10th Earl Galloway 1835-1901 was born to [her husband] Randolph Stewart 9th Earl Galloway 1800-1873 (age 35) and Harriet Blanche Somerset Countess Galloway (age 24). Coefficient of inbreeding 1.58%.
On 23 Nov 1835 [her father] Henry Charles Somerset 6th Duke Beaufort (age 68) died. His son [her brother] Henry Somerset 7th Duke Beaufort (age 43) succeeded 7th Duke Beaufort, 9th Marquess Worcester, 13th Earl Worcester, 7th Baron Botetort. (age 35) by marriage Duchess Beaufort.
On 14 Oct 1836 [her son] Randolph Stewart 11th Earl Galloway 1836-1920 was born to [her husband] Randolph Stewart 9th Earl Galloway 1800-1873 (age 36) and Harriet Blanche Somerset Countess Galloway (age 25) at Galloway House. Coefficient of inbreeding 1.58%.
On 08 Nov 1838 [her son] Alexander Stewart was born to [her husband] Randolph Stewart 9th Earl Galloway 1800-1873 (age 38) and Harriet Blanche Somerset Countess Galloway (age 27). Coefficient of inbreeding 1.58%.
On 06 Nov 1840 [her daughter] Emma Georgiana Stewart was born to [her husband] Randolph Stewart 9th Earl Galloway 1800-1873 (age 40) and Harriet Blanche Somerset Countess Galloway (age 29). Coefficient of inbreeding 1.58%.
On 09 Aug 1841 [her brother-in-law] Keith Stewart (age 27) and Mary Caroline Fitzroy (age 18) were married. He the son of George Stewart 8th Earl Galloway 1768-1834 and Jane Paget Countess Galloway 1774-1842 (age 66). She a great x 4 granddaughter of King Charles II of England Scotland and Ireland. 
In 1842 [her daughter] Mary Louisa Stewart was born to [her husband] Randolph Stewart 9th Earl Galloway 1800-1873 (age 42) and Harriet Blanche Somerset Countess Galloway (age 30). Coefficient of inbreeding 1.58%.
On 12 Aug 1854 [her mother] Charlotte Sophia Leveson-Gower Duchess Beaufort 1771-1854 (age 83) died.
In 1857 [her sister-in-law] Caroline Stewart (age 58) died.
On 02 Dec 1858 [her son-in-law] Wilbraham Tollemache 2nd Baron Tollemache (age 26) and [her daughter] Emma Georgiana Stewart (age 18) were married. She the daughter of Randolph Stewart 9th Earl Galloway 1800-1873 (age 58) and Harriet Blanche Somerset Countess Galloway 1811-1885 (age 47).
On 24 Jan 1869 [her daughter] Emma Georgiana Stewart (age 28) died.
In 1872 [her son] Alan Stewart 10th Earl Galloway 1835-1901 (age 36) and [her daughter-in-law] Mary Arabella Arthur Gascoyne-Cecil Countess Galloway 1850-1903 (age 21) were married. She the daughter of James Brownlow William Gascoyne-Cecil 2nd Marquess Salisbury and Mary Catherine Sackville-West Marchioness Salisbury 1824-1900 (age 47). He the son of Randolph Stewart 9th Earl Galloway 1800-1873 (age 72) and Harriet Blanche Somerset Countess Galloway 1811-1885 (age 60). They were third cousin once removed.
In 1873 [her husband] Randolph Stewart 9th Earl Galloway 1800-1873 (age 73) died. His son [her son] Alan Stewart 10th Earl Galloway 1835-1901 (age 37) succeeded 10th Earl Galloway, 9th Baronet Stewart of Corsewall, 8th Baronet Stewart of Burray in Orkney. [her daughter-in-law] Mary Arabella Arthur Gascoyne-Cecil Countess Galloway 1850-1903 (age 22) by marriage Countess Galloway.
On 13 Aug 1874 [her son-in-law] Charles Edward Cooke (age 45) and [her daughter] Mary Louisa Stewart (age 32) were married. She the daughter of Randolph Stewart 9th Earl Galloway 1800-1873 and Harriet Blanche Somerset Countess Galloway 1811-1885 (age 62).
On 15 Sep 1879 [her former brother-in-law] Keith Stewart (age 65) died.
On 25 May 1885 Harriet Blanche Somerset Countess Galloway (age 73) died.
Paternal Family Tree: Anjou aka Plantagenet
Maternal Family Tree: Catherine Cochrane Countess Galloway 1709-1786
Descendants Family Trees:
Kings Wessex: Great x 22 Grand Daughter of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 19 Grand Daughter of Owain "Great" King Gwynedd 1100-1170
Kings Seisyllwg: Great x 25 Grand Daughter of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 20 Grand Daughter of Maredudd ap Bleddyn King Powys 1047-1132
Kings England: Great x 12 Grand Daughter of King Edward III of England
Kings Scotland: Great x 16 Grand Daughter of Robert "The Bruce" I King Scotland
Kings Franks: Great x 18 Grand Daughter of Louis VII King Franks
Kings France: Great x 14 Grand Daughter of Philip "The Fair" IV King France
Great x 4 Grandfather: Henry Somerset 1st Duke Beaufort 9 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Charles Somerset Marquess Worcester 10 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Mary Capell Duchess Beaufort 9 x Great Grand Daughter of King Edward III of England
Great x 2 Grandfather: Henry Somerset 2nd Duke Beaufort 11 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Josiah Child
Great x 3 Grandmother: Rebecca Child Marchioness Worcester
Great x 1 Grandfather: Charles Noel Somerset 4th Duke Beaufort 11 x Great Grand Son of Henry IV King England
Great x 4 Grandfather: Edward Noel 1st Earl Gainsborough
Great x 3 Grandfather: Wriothesley Baptist Noel 2nd Earl Gainsborough 1661-1690 9 x Great Grand Son of Henry IV King England
Great x 4 Grandmother: Elizabeth Wriothesley Countess Gainsborough
8 x Great Grand Daughter of Henry IV King England
Great x 2 Grandmother: Rachel Noel Duchess Beaufort 1687-1709 10 x Great Grand Daughter of Henry IV King England
Great x 4 Grandfather: Fulke Greville 5th Baron Brooke
9 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Catherine Greville Duchess Buckingham and Normandby 10 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Sarah Dashwood Baroness Brooke
GrandFather: Henry Somerset 5th Duke Beaufort 12 x Great Grand Son of Henry IV King England
Great x 4 Grandfather: Maurice Berkeley
10 x Great Grand Son of King Edward "Longshanks" I of England
Great x 3 Grandfather: Richard Berkeley 11 x Great Grand Son of King Edward "Longshanks" I of England
Great x 2 Grandfather: John Symes Berkeley 12 x Great Grand Son of King Edward "Longshanks" I of England
Great x 1 Grandmother: Elizabeth Berekeley Duchess Beaufort 1713-1799 13 x Great Grand Daughter of King Edward "Longshanks" I of England
Great x 2 Grandmother: Elizabeth Norborne
Father: Henry Charles Somerset 6th Duke Beaufort 12 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Hugh Boscawen
Great x 3 Grandfather: Edward Boscawen
Great x 4 Grandmother: Margaret Rolle
Great x 2 Grandfather: Hugh Boscawen 1st Viscount Falmouth 9 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Francis Godolphin
Great x 3 Grandmother: Jael Godolphin 8 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Dorothy Berkeley 7 x Great Grand Daughter of King Edward III of England
Great x 1 Grandfather: Edward Boscawen 10 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Charles Godfrey
Great x 2 Grandmother: Charlotte Godfrey Viscountess Falmouth 15 x Great Grand Daughter of King Edward "Longshanks" I of England
Great x 4 Grandfather: Winston Churchill
Great x 3 Grandmother: Arabella Churchill 14 x Great Grand Daughter of King Edward "Longshanks" I of England
Great x 4 Grandmother: Elizabeth Drake 13 x Great Grand Daughter of King Edward "Longshanks" I of England
GrandMother: Elizabeth Boscawen Duchess Beaufort 1747-1828 11 x Great Grand Daughter of King Edward III of England
Great x 3 Grandfather: George Evelyn of Nutfield
Great x 2 Grandfather: William Evelyn Evelyn
Great x 1 Grandmother: Frances Evelyn Evelyn
Harriet Blanche Somerset Countess Galloway 1811-1885 12 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Thomas Gower 2nd Baronet
Great x 3 Grandfather: William Leveson-Gower 4th Baronet
Great x 4 Grandmother: Frances Leveson Baroness Gower
Great x 2 Grandfather: John Leveson-Gower 1st Baron Gower
Great x 4 Grandfather: John Granville 1st Earl Bath
Great x 3 Grandmother: Jane Granville Baroness Gower
Great x 4 Grandmother: Jane Wyche
Great x 1 Grandfather: John Leveson-Gower 1st Earl Gower 10 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: John Manners 8th Earl of Rutland
7 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: John Manners 1st Duke Rutland 8 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Frances Montagu Countess Rutland
10 x Great Grand Daughter of King Edward "Longshanks" I of England
Great x 2 Grandmother: Catherine Manners Baroness Gower 9 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Baptist Noel 3rd Viscount Campden
Great x 3 Grandmother: Catherine Noel Duchess Rutland 11 x Great Grand Daughter of King Edward "Longshanks" I of England
Great x 4 Grandmother: Elizabeth Bertie Viscountess Campden
10 x Great Grand Daughter of King Edward "Longshanks" I of England
GrandFather: Granville Leveson-Gower 1st Marquess Stafford 10 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: William Pierrepont of Thoresby
8 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Robert Pierrepont 9 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Elizabeth Harries aka Harris
Great x 2 Grandfather: Evelyn Pierrepont 1st Duke Kingston upon Hull 10 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: John Evelyn of Wiltshire
Great x 3 Grandmother: Elizabeth Evelyn
Great x 4 Grandmother: Elizabeth Coxe
Great x 1 Grandmother: Evelyn Pierrepont Baroness Gower 9 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: George Feilding 1st Earl Desmond 1614-1665
Great x 3 Grandfather: William Feilding 2nd Earl Desmond 3rd Earl Denbigh 1640-1685 7 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Bridget Stanhope Countess Desmond 1615-1701
6 x Great Grand Daughter of King Edward III of England
Great x 2 Grandmother: Mary Fielding Countess Kingston upon Hull 1668-1697 8 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Henry Carey 2nd Earl Monmouth
7 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Mary Carey Countess Desmond and Denbigh 1632-1682 8 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Martha Cranfield Countess Monmouth 1601-
Mother: Charlotte Sophia Leveson-Gower Duchess Beaufort 1771-1854 11 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: James Stewart 2nd Earl Galloway 1610-1671
Great x 3 Grandfather: Alexander Stewart 3rd Earl Galloway -1690
Great x 2 Grandfather: James Stewart 5th Earl Galloway 1670-1746 10 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: James Douglas 2nd Earl Queensberry 1622-1671
8 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Mary Douglas Countess Galloway 9 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Margaret Stewart Countess Queensberry 8 x Great Grand Daughter of King Edward III of England
Great x 1 Grandfather: Alexander Stewart 6th Earl Galloway 11 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Alexander Montgomerie 8th Earl Eglinton 1638-1701 9 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Alexander Montgomerie 9th Earl Eglinton 10 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Elizabeth Crichton
Great x 2 Grandmother: Catherine Montgomerie Countess Galloway 11 x Great Grand Daughter of King Edward III of England
GrandMother: Susanna Stewart Marchioness Stafford -1805 12 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: William Cochrane
Great x 3 Grandfather: 10 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Catherine Kennedy 9 x Great Grand Daughter of King Edward III of England
Great x 2 Grandfather: 11 x Great Grand Son of King Edward III of England
Great x 1 Grandmother: 12 x Great Grand Daughter of King Edward III of England