Sibyl married John Sholto (Marquis 9th of Queensbury) Douglas on 26 Feb 1866 in St.George, Hanover Square, London, England. John (son of Archibald William (8th Marquis of Queensbury) Douglas and Caroline Clayton) was born on 20 Jul 1844 in Florence, Italy; died on 31 Jan 1900 in Welbeck Street; was buried on 3 Feb 1900 in Kinmount, Cummertrees, Dumfriesshire, Scotland. [Group Sheet] [Family Chart]

1. Viscount Francis Archibald (Baron Kelhead) Douglas was born on 3 Feb 1867 in 8 Chesterfield Street, Mayfair, London, Middlesex, England; died on 18 Oct 1894 in Quantock Lodge, Bridgewater, Somerset, England; was buried in Kinmount, Cummertrees, Dumfriesshire, Scotland.
2. Percy (10th Marquis of Queensbury) Douglas was born on 13 Oct 1868; died on 1 Aug 1920.
3. Lord Alfred (of Queensbury) Douglas was born in 1870; died in 1945.
4. Lord Sholto (of Queensbury) Douglas was born in 1872; died in 1942.
5. Lady Edith (of Queensbury) Douglas was born on 31 Mar 1874; died on 20 Jul 1963.