On 24 Oct 1935 [his father] George Victor Robert John Innes-Kerr 9th Duke Roxburghe (age 22) and [his step-mother] Mary Evelyn Hungerford Crewe Milnes Duchess Roxburghe 1915-2014 (age 20) were married. She by marriage Duchess Roxburghe. She the daughter of Robert Offley Ashburton Crewe Milnes 1st Marquess of Crewe (age 77) and Margaret Etrenne Hannah "Peggy" Primrose Marchioness Crewe (age 54). He the son of Henry John Innes-Kerr 8th Duke Roxburghe 1876-1932.
On 18 Nov 1954 Guy David Innes-Kerr 10th Duke Roxburghe was born to George Victor Robert John Innes-Kerr 9th Duke Roxburghe (age 41) and (age 35).
On 26 Sep 1974 [his father] George Victor Robert John Innes-Kerr 9th Duke Roxburghe (age 61) died. His son Guy David Innes-Kerr 10th Duke Roxburghe (age 19) succeeded 10th Duke Roxburghe.
On 10 Sep 1977 Guy David Innes-Kerr 10th Duke Roxburghe (age 22) and Jane Meriel Grosvenor Duchess Roxburghe 1953- (age 24) were married. She by marriage Duchess Roxburghe. She the daughter of Robert George Grosvenor 5th Duke Westminster 1910-1979 (age 67) and Viola Maud Lyttelton Duchess Westminster 1912-1987 (age 65). He the son of George Victor Robert John Innes-Kerr 9th Duke Roxburghe and (age 58).
On 11 Jun 1996 Edward William Dawnay (age 46) and [his wife] Jane Meriel Grosvenor Duchess Roxburghe 1953- (age 43) were married. She the daughter of Robert George Grosvenor 5th Duke Westminster 1910-1979 and Viola Maud Lyttelton Duchess Westminster 1912-1987. They were second cousins.
Paternal Family Tree: Innes
Kings Wessex: Great x 28 Grand Son of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 25 Grand Son of Owain "Great" King Gwynedd 1100-1170
Kings Seisyllwg: Great x 31 Grand Son of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 26 Grand Son of Maredudd ap Bleddyn King Powys 1047-1132
Kings England: Great x 18 Grand Son of King Edward III of England
Kings Scotland: Great x 21 Grand Son of Robert "The Bruce" I King Scotland
Kings Franks: Great x 24 Grand Son of Louis VII King Franks
Kings France: Great x 20 Grand Son of Philip "The Fair" IV King France
Great x 4 Grandfather: John Innes 5th Baronet
Great x 3 Grandfather: James Innes-Kerr 5th Duke Roxburghe
Great x 2 Grandfather: James Innes-Kerr 6th Duke Roxburghe 1816-1879
Great x 1 Grandfather: James Henry Robert Innes-Kerr 7th Duke Roxburghe 1839-1892
GrandFather: Henry John Innes-Kerr 8th Duke Roxburghe 1876-1932 16 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: George Spencer-Churchill 5th Duke Marlborough 1766-1840
12 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: George Spencer-Churchill 6th Duke Marlborough 13 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Susan Stewart Duchess Marlborough 1767-1841
13 x Great Grand Daughter of King Edward III of England
Great x 2 Grandfather: John Winston Spencer-Churchill 7th Duke Marlborough 1822-1883 14 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: George Stewart 8th Earl Galloway 1768-1834 13 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Jane Stewart Duchess Marlborough 1798-1844 14 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Jane Paget Countess Galloway 1774-1842
13 x Great Grand Daughter of King Edward III of England
Great x 1 Grandmother: Anne Emily Spencer-Churchill Duchess Roxburghe 1854-1923 15 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Robert Stewart 1st Marquess Londonderry
Great x 3 Grandfather: Charles William Vane 3rd Marquess Londonderry
Great x 4 Grandmother: Frances Pratt Marchioness Londonderry 1751-1833
Great x 2 Grandmother: Frances Anne Emily Vane Duchess Marlborough 15 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Henry Vane-Tempest 2nd Baronet 13 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Frances Vane Tempest Marchioness Londonderry 1800-1865 14 x Great Grand Daughter of King Edward III of England
Father: George Victor Robert John Innes-Kerr 9th Duke Roxburghe 17 x Great Grand Son of King Edward III of England
Guy David Innes-Kerr 10th Duke Roxburghe 1954- 18 x Great Grand Son of King Edward III of England