Lord Francis Douglas Marquess of Queensberry; a younger brother, Lord Archibald Edward Douglas (1850–1938), who became a clergyman; and a younger brother and sister, the twins Lord James Douglas (d. 1891) and Lady Florence Douglas (1855–1905), who married Sir Alexander Beaumont Churchill Dixie, 11th Baronet. He was an uncle of Oscar Wilde's lover Lord Alfred Douglas, and a younger brother of John Douglas, 9th Marquess of Queensberry. In 1858, Douglas's father, Lord Queensberry, died in what was reported as a shooting accident, but his death was widely believed to have been suicide. In 1862, his mother, Lady Queensberry, converted to Roman Catholicism and
Lord David Douglas-Hamilton Spitfires in Operation Torch over Malta. On return to Britain, he was killed whilst carrying out reconnaissance over the French coast, and crashed in southern England. At the 1934 Empire Games he won the bronze medal in the heavyweight class of the boxing tournament. On 15 October 1938 he married Ann Prunella Stack, the leader of the Women's League for Health and Beauty. They had two sons: Lord David Douglas-Hamilton Squadron Leader Lord David Douglas-Hamilton (8 November 1912 – 2 August 1944) was a Scottish nobleman, pilot, and boxer. He was the youngest son of Lt. Alfred Douglas-Hamilton, 13th Duke