Duke Roxburghe is in Duke.
In 1707 John Ker 1st Duke Roxburghe [aged 26] was created 1st Duke Roxburghe.
Before 1709 John Ker 1st Duke Roxburghe [aged 28] and Mary Finch Duchess Roxburghe [aged 31] were married. She by marriage Duchess Roxburghe. She the daughter of Daniel Finch 2nd Earl Nottingham 7th Earl Winchilsea [aged 61] and Essex Rich Countess Nottingham. He the son of Robert Ker 3rd Earl Roxburghe and Margaret Hay Countess Roxburghe.
On 27th February 1741 John Ker 1st Duke Roxburghe [aged 60] died. His son Robert [aged 32] succeeded 2nd Duke Roxburghe. Essex Mostyn Duchess Roxburghe by marriage Duchess Roxburghe.
On 20th August 1755 Robert Ker 2nd Duke Roxburghe [aged 46] died. His son John [aged 15] succeeded 3rd Duke Roxburghe.
On 19th July 1823 James Innes-Kerr 5th Duke Roxburghe [aged 87] died. His son James [aged 7] succeeded 6th Duke Roxburghe.
On 11th June 1874 James Henry Robert Innes-Kerr 7th Duke Roxburghe [aged 34] and Anne Emily Spencer-Churchill Duchess Roxburghe [aged 19] were married. She by marriage Duchess Roxburghe. She the daughter of John Winston Spencer-Churchill 7th Duke of Marlborough [aged 52] and Frances Anne Emily Vane Duchess of Marlborough [aged 52]. He the son of James Innes-Kerr 6th Duke Roxburghe [aged 57].
On 23rd April 1879 James Innes-Kerr 6th Duke Roxburghe [aged 62] died. His son James [aged 39] succeeded 7th Duke Roxburghe.
On 23rd October 1892 James Henry Robert Innes-Kerr 7th Duke Roxburghe [aged 53] died. His son Henry [aged 16] succeeded 8th Duke Roxburghe.
In 1932 Henry John Innes-Kerr 8th Duke Roxburghe [aged 56] died. His son George [aged 18] succeeded 9th Duke Roxburghe.
On 24th October 1935 George Victor Robert John Innes-Kerr 9th Duke Roxburghe [aged 22] and Mary Evelyn Hungerford Crewe Milnes Duchess Roxburghe [aged 20] were married. She by marriage Duchess Roxburghe. She the daughter of Robert Offley Ashburton Crewe Milnes 1st Marquess of Crewe [aged 77] and Margaret Etrenne Hannah "Peggy" Primrose Marchioness Crewe [aged 54]. He the son of Henry John Innes-Kerr 8th Duke Roxburghe.
On 5th January 1954 George Victor Robert John Innes-Kerr 9th Duke Roxburghe [aged 40] and Margaret Elizabeth Mcconnel Duchess Roxburghe [aged 35] were married. She by marriage Duchess Roxburghe. He the son of Henry John Innes-Kerr 8th Duke Roxburghe.
On 26th September 1974 George Victor Robert John Innes-Kerr 9th Duke Roxburghe [aged 61] died. His son Guy [aged 19] succeeded 10th Duke Roxburghe.
On 10th September 1977 Guy David Innes-Kerr 10th Duke Roxburghe [aged 22] and Jane Meriel Grosvenor Duchess Roxburghe [aged 24] were married. She by marriage Duchess Roxburghe. She the daughter of Robert George Grosvenor 5th Duke Westminster [aged 67] and Viola Maud Lyttelton Duchess Westminster [aged 65]. He the son of George Victor Robert John Innes-Kerr 9th Duke Roxburghe and Margaret Elizabeth Mcconnel Duchess Roxburghe [aged 58].