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 Alfred Douglas in June he was again decertified. His conduct rapidly deteriorated and he returned to St Andrew's in November. He he stayed there until his death on 10 October 1964. He never married. Douglas died of congestive heart failure in Lancing, Sussex, on 20 March 1945 at the age of 74. He was buried on 23 March at the Franciscan Friary, Crawley, where he is interred alongside his mother, who had died on 31 October 1935 at the age of 91. A single gravestone covers them. The elderly Douglas, living in reduced circumstances in Hove in the 1940s, is mentioned in