On 22 Apr 1751 Francis Scott 2nd Duke Buccleuch (age 56) died. He was buried at Eton College Chapel [Map]. His grandson [her father] Henry Scott 3rd Duke Buccleuch (age 4) succeeded 3rd Duke Buccleuch, 3rd Earl Doncaster, 3rd Baron Scott of Tynedale.
On 02 May 1767 [her father] Henry Scott 3rd Duke Buccleuch (age 20) and [her mother] Elizabeth Montagu Duchess Buccleuch 1743-1827 (age 23) were married at Montagu House Whitehall Palace. She by marriage Duchess Buccleuch. She the daughter of George Brudenell aka Montagu 1st Duke Montagu (age 54) and Mary Montagu Duchess Montagu (age 56). They were fourth cousins. He a great x 3 grandson of King Charles II of England Scotland and Ireland. 
On 01 Dec 1780 Harriet Scott Marchioness Lothian was born to Henry Scott 3rd Duke Buccleuch (age 34) and Elizabeth Montagu Duchess Buccleuch 1743-1827 (age 37).
On 04 Apr 1793 [her future husband] William Kerr 6th Marquess Lothian (age 29) and Harriet Hobart Viscountess Belmore (age 30) were married. She the daughter of John Hobart 2nd Earl Buckinghamshire (age 69) and Mary Anne Drury Countess Buckinghamshire 1740-1769. He the son of William John Kerr 5th Marquess Lothian 1737-1815 (age 56) and . He a great x 5 grandson of King James I of England and Ireland and VI of Scotland. 
On 20 Nov 1795 John Evelyn Pierrepont Dormer 10th Baron Dormer (age 24) and [her future sister-in-law] Elizabeth Kerr Baroness Dormer (age 30) were married. She the daughter of William John Kerr 5th Marquess Lothian 1737-1815 (age 58) and . She a great x 5 granddaughter of King James I of England and Ireland and VI of Scotland. 
On 18 Jul 1799 [her future brother-in-law] Vice-Admiral Mark Robert Kerr (age 22) and Charlotte MacDonnell Countess of Antrim (age 19) were married at St George's Church, Hanover Square. He the son of William John Kerr 5th Marquess Lothian 1737-1815 (age 62) and . He a great x 5 grandson of King James I of England and Ireland and VI of Scotland.
Before 1807 William Kerr 6th Marquess Lothian (age 43) and Harriet Scott Marchioness Lothian (age 26) were married. She the daughter of Henry Scott 3rd Duke Buccleuch (age 60) and Elizabeth Montagu Duchess Buccleuch 1743-1827 (age 63). He the son of William John Kerr 5th Marquess Lothian 1737-1815 (age 69) and . They were fourth cousins. He a great x 5 grandson of King James I of England and Ireland and VI of Scotland. She a great x 4 granddaughter of King Charles II of England Scotland and Ireland.
In 1807 [her daughter] Elizabeth Georgiana Kerr Baroness Clinton was born to [her husband] William Kerr 6th Marquess Lothian (age 43) and Harriet Scott Marchioness Lothian (age 26).
In 1808 [her daughter] Harriet Louise Anne Kerr was born to [her husband] William Kerr 6th Marquess Lothian (age 44) and Harriet Scott Marchioness Lothian (age 27).
In 1810 [her daughter] Frances Kerr was born to [her husband] William Kerr 6th Marquess Lothian (age 46) and Harriet Scott Marchioness Lothian (age 29).
In 1812 [her daughter] Anne Katherine Kerr was born to [her husband] William Kerr 6th Marquess Lothian (age 48) and Harriet Scott Marchioness Lothian (age 31).
On 11 Jan 1812 [her father] Henry Scott 3rd Duke Buccleuch (age 65) died. His son [her brother] Charles Scott 4th Duke Buccleuch 6th Duke Queensberry 1772-1819 (age 39) succeeded 4th Duke Buccleuch, 6th Duke Queensberry, 4th Earl Doncaster, 4th Baron Scott of Tynedale. Harriet Katherine Townshend Duchess Buccleuch Duchess Queensbury 1773-1814 (age 38) by marriage Duchess Buccleuch.
In 1814 [her son] Lieutenant Colonel Charles Lennox Kerr was born to [her husband] William Kerr 6th Marquess Lothian (age 50) and Harriet Scott Marchioness Lothian (age 33).
On 04 Jan 1815 [her father-in-law] William John Kerr 5th Marquess Lothian 1737-1815 (age 77) died. His son [her husband] William Kerr 6th Marquess Lothian (age 51) succeeded 6th Marquess Lothian. Harriet Scott Marchioness Lothian (age 34) by marriage Marchioness Lothian.
On 02 Mar 1816 [her brother-in-law] Charles Beauchamp Kerr (age 40) died.
In 1817 [her son] Mark Ralph George Kerr was born to [her husband] William Kerr 6th Marquess Lothian (age 53) and Harriet Scott Marchioness Lothian (age 36).
In 1818 [her son] Frederick Herbert Kerr was born to [her husband] William Kerr 6th Marquess Lothian (age 54) and Harriet Scott Marchioness Lothian (age 37).
On 23 Jun 1819 [her sister-in-law] Louisa Kerr (age 50) died.
In 1821 [her daughter] Georgiana Augusta Kerr was born to [her husband] William Kerr 6th Marquess Lothian (age 57) and Harriet Scott Marchioness Lothian (age 40).
On 13 Aug 1822 [her sister-in-law] Elizabeth Kerr Baroness Dormer (age 56) died.
On 27 Apr 1824 [her husband] William Kerr 6th Marquess Lothian (age 60) died at Richmond, Surrey [Map]. His son [her step-son] John Kerr 7th Marquess Lothian 1794-1841 (age 30) succeeded 7th Marquess Lothian.
In 1825 [her former step-son] John Kerr (age 30) died.
On 21 Nov 1827 [her mother] Elizabeth Montagu Duchess Buccleuch 1743-1827 (age 84) died. Monument in St Edmund's Church, Warkton [Map]. Sculpted by Thomas Campbell (age 37). Erected by her grandson Francis Scott 2nd Duke Buccleuch. The quotation upon her monument from Book of the Acts of the Apostles Chapter 10 Verses 31: "Thine alms are had in remembrance in the sight of God".
In 1829 [her daughter] Anne Katherine Kerr (age 17) died.
On 24 Jan 1829 [her former sister-in-law] Caroline Sidney Kerr (age 62) died.
In 1831 [her former step-son] John Kerr 7th Marquess Lothian 1794-1841 (age 36) and Cecil Chetwynd-Talbot Marchioness Lothian 1808-1877 (age 22) were married. She by marriage Marchioness Lothian. She the daughter of Charles Chetwynd-Talbot 2nd Earl Talbot (age 53) and Frances Thomasine Lambart Countess Talbot. He the son of William Kerr 6th Marquess Lothian and Harriet Hobart Viscountess Belmore.
In 1831 [her son-in-law] Charles Rudolph Trefusis 19th Baron Clinton (age 39) and [her daughter] Elizabeth Georgiana Kerr Baroness Clinton (age 24) were married. She the daughter of William Kerr 6th Marquess Lothian and Harriet Scott Marchioness Lothian 1780-1833 (age 50). She a great x 5 granddaughter of King Charles II of England Scotland and Ireland. 
On 18 Apr 1833 Harriet Scott Marchioness Lothian (age 52) died.
Paternal Family Tree: Stewart
Maternal Family Tree: Susanna Temple 1600
Kings Wessex: Great x 21 Grand Daughter of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 18 Grand Daughter of Owain "Great" King Gwynedd 1100-1170
Kings Seisyllwg: Great x 24 Grand Daughter of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 19 Grand Daughter of Maredudd ap Bleddyn King Powys 1047-1132
Kings England: Great x 4 Grand Daughter of King Charles II of England Scotland and Ireland
Kings Scotland: Great x 15 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 6 Grand Daughter of Henry IV King France
Great x 4 Grandfather: King Charles II of England Scotland and Ireland
Son of King Charles I of England, Scotland and Ireland
Great x 3 Grandfather: James Scott 1st Duke Monmouth 1st Duke Buccleuch Son of King Charles II of England Scotland and Ireland
Great x 4 Grandmother: Lucy Walter
Great x 2 Grandfather: James Scott Grand Son of King Charles II of England Scotland and Ireland
Great x 3 Grandmother: Anne Scott Duchess Monmouth and Buccleuch 9 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Margaret Leslie Countess Buccleuch and Wemyss
8 x Great Grand Daughter of King Edward III of England
Great x 1 Grandfather: Francis Scott 2nd Duke Buccleuch Great Grand Son of King Charles II of England Scotland and Ireland
Great x 4 Grandfather: Edward Hyde 1st Earl Clarendon
Great x 3 Grandfather: Lawrence Hyde 1st Earl Rochester
Great x 4 Grandmother: Frances Aylesbury Countess Clarendon
Great x 2 Grandmother: Henrietta Hyde Countess Dalkeith 1677-1730 10 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Richard Boyle 2nd Earl Cork 1st Earl Burlington
Great x 3 Grandmother: Henrietta Boyle Countess Rochester 9 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Elizabeth Clifford Countess Burlington
8 x Great Grand Daughter of King Edward III of England
GrandFather: Francis Scott 2 x Great Grand Son of King Charles II of England Scotland and Ireland
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 Grandfather: William Douglas 1st Duke Queensberry 9 x Great Grand Son 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 2 Grandfather: James Douglas 2nd Duke Queensberry 1662-1711 9 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: William Douglas 1st Marquess Douglas 8 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Isabel Douglas Countess Queensberry 1642-1691 8 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Mary Gordon Marchioness Douglas 1600-1674 7 x Great Grand Daughter of King Edward III of England
Great x 1 Grandmother: Jane Douglas 6 x Great Grand Daughter of King Henry VII of England and Ireland
Great x 4 Grandfather: Richard Boyle 2nd Earl Cork 1st Earl Burlington
Great x 3 Grandfather: Charles Boyle 3rd Baron Clifford 9 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Elizabeth Clifford Countess Burlington 8 x Great Grand Daughter of King Edward III of England
Great x 2 Grandmother: Mary Boyle Duchess Queensbury 1664-1709 5 x Great Grand Daughter of King Henry VII of England and Ireland
Great x 4 Grandfather: William Seymour 2nd Duke Somerset
3 x Great Grand Son of King Henry VII of England and Ireland
Great x 3 Grandmother: Jane Seymour Baroness Clifford 4 x Great Grand Daughter of King Henry VII of England and Ireland
Great x 4 Grandmother: Frances Devereux Duchess of Somerset
8 x Great Grand Daughter of King Edward III of England
Father: Henry Scott 3rd Duke Buccleuch 3 x Great Grand Son of King Charles II of England Scotland and Ireland
Great x 4 Grandfather: Archibald Campbell 1st Marquess Argyll 8 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Archibald Campbell 9th Earl Argyll 9 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Margaret Douglas Marchioness Argyll 1610-1678 9 x Great Grand Daughter of King Edward III of England
Great x 2 Grandfather: Archibald Campbell 1st Duke Argyll 6 x Great Grand Son of King Henry VII of England and Ireland
Great x 4 Grandfather: James Stewart 4th Earl Moray 1611-1653
4 x Great Grand Son of King Henry VII of England and Ireland
Great x 3 Grandmother: Mary Stewart Countess Argyll 1628-1668 5 x Great Grand Daughter of King Henry VII of England and Ireland
Great x 4 Grandmother: Margaret Home Countess Moray 8 x Great Grand Daughter of King Edward III of England
Great x 1 Grandfather: John Campbell 2nd Duke Argyll 1680-1743 7 x Great Grand Son of King Henry VII of England and Ireland
Great x 4 Grandfather: Lionel Tollemache 2nd Baronet
8 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Lionel Tollemache 3rd Baronet 7 x Great Grand Son 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 2 Grandmother: Elizabeth Tollemache Duchess Argyll 1659-1735 8 x Great Grand Daughter of King Edward III of England
Great x 3 Grandmother: Elizabeth Murray Duchess Lauderdale
GrandMother: Caroline Campbell 1st Baroness Greenwich 8 x Great Grand Daughter of King Henry VII of England and Ireland
Harriet Scott Marchioness Lothian 1780-1833 4 x Great Grand Daughter of King Charles II of England Scotland and Ireland
Great x 4 Grandfather: Thomas Brudenell 1st Earl Cardigan
Great x 3 Grandfather: Robert Brudenell 2nd Earl Cardigan 8 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Mary Tresham Countess Cardigan -1664 7 x Great Grand Daughter of King Edward III of England
Great x 2 Grandfather: Francis Brudenell 9 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Thomas Savage 1st Viscount Savage
7 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Anna Savage Countess Cardigan -1696 8 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Elizabeth Darcy 1st Countess Rivers
9 x Great Grand Daughter of King Edward III of England
Great x 1 Grandfather: George Brudenell 3rd Earl Cardigan 1685-1732 9 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: John Savile 1st Baron Savile
6 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Thomas Savile 1st Earl of Sussex 7 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Elizabeth Carey Baroness Savile
6 x Great Grand Daughter of King Edward III of England
Great x 2 Grandmother: Frances Savile 8 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Christopher Villiers 1st Earl Anglesey
8 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Anne Villiers Countess Sussex -1665 9 x Great Grand Daughter of King Edward III of England
GrandFather: George Brudenell aka Montagu 1st Duke Montagu 7 x Great Grand Son of King Henry VII of England and Ireland
Great x 4 Grandfather: Thomas Bruce 1st Earl Elgin
Great x 3 Grandfather: Robert Bruce 2nd Earl Elgin 1st Earl Ailesbury 9 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Anne Chichester
8 x Great Grand Daughter of King Edward III of England
Great x 2 Grandfather: Thomas Bruce 3rd Earl Elgin 2nd Earl Ailesbury 10 x Great Grand Son of King Edward III of England
Great x 1 Grandmother: Elizabeth Bruce 3rd Countess Cardigan 1689-1745 6 x Great Grand Daughter of King Henry VII of England and Ireland
Great x 4 Grandfather: William Seymour 2nd Duke Somerset 3 x Great Grand Son of King Henry VII of England and Ireland
Great x 3 Grandfather: Henry Seymour 4 x Great Grand Son of King Henry VII of England and Ireland
Great x 4 Grandmother: Frances Devereux Duchess of Somerset 8 x Great Grand Daughter of King Edward III of England
Great x 2 Grandmother: Elizabeth Seymour Countess Elgin and Ailesbury 1655-1697 5 x Great Grand Daughter of King Henry VII of England and Ireland
Great x 4 Grandfather: Arthur Capell 1st Baron Capell Hadham 8 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Mary Capell Duchess Beaufort 9 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Elizabeth Morrison Baroness Capell Hadham
8 x Great Grand Daughter of King Edward III of England
Mother: Elizabeth Montagu Duchess Buccleuch 1743-1827 8 x Great Grand Daughter of King Henry VII of England and Ireland
Great x 4 Grandfather: Edward Montagu 1st Baron Montagu 9 x Great Grand Son of King Edward "Longshanks" I of England
Great x 3 Grandfather: Edward Montagu 2nd Baron Montagu 10 x Great Grand Son of King Edward "Longshanks" I of England
Great x 4 Grandmother: Frances Cotton 12 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 2 Grandfather: Ralph Montagu 1st Duke Montagu 11 x Great Grand Son of King Edward "Longshanks" I of England
Great x 4 Grandfather: Ralph Winwood
Great x 3 Grandmother: Anne Winwood Baroness Montagu
Great x 1 Grandfather: John Montagu 2nd Duke Montagu 9 x Great Grand Son of Henry IV King 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 Henry IV King England
Great x 4 Grandmother: Elizabeth Vernon Countess Southampton 1572-1655
6 x Great Grand Daughter of Henry IV King England
Great x 2 Grandmother: Elizabeth Wriothesley Countess Northumberland 1646-1690 8 x Great Grand Daughter of Henry IV King England
Great x 4 Grandfather: Francis Leigh 1st Earl Chichester
Great x 3 Grandmother: Elizabeth Leigh Countess Southampton 1620-1655 13 x Great Grand Daughter of King Edward "Longshanks" I of England
Great x 4 Grandmother: Audrey Boteler Countess Chichester 12 x Great Grand Daughter of King Edward "Longshanks" I of England
GrandMother: Mary Montagu Duchess Montagu 10 x Great Grand Daughter of Henry IV King 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: Mary Churchill Duchess Montagu 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