He married
Vreda Esther Mary Lascelles, granddaughter of
William Beauclerk, 10th Duke of St Albans, on 21 April 1921. They have three children, sixteen grandchildren, forty-four great-grandchildren and two great-great-grandchildren: •
Lady Elizabeth Montagu Douglas Scott (20 January 1922 – 19 September 2012); she married
Hugh Percy, 10th Duke of Northumberland, on 12 June 1946. They had seven children and seventeen grandchildren. •
John Montagu Douglas Scott, 9th Duke of Buccleuch (28 September 1923 – 4 September 2007); he married Jane McNeill on 10 January 1953. They have four children, ten grandchildren and two great-grandchildren. • Lady Caroline Montagu Douglas Scott (7 November 1927 – 17 October 2004); she married
Ian Gilmour (later created a life peer as Baron Gilmour of Craigmillar), on 10 July 1951. They have five children, including historian
David Gilmour, and seventeen grandchildren. He died on 4 October 1973 and was buried among the ruins of
Melrose Abbey. ==Sources==