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 did give him occasional handouts. When Wilde died in 1900, he was still bankrupt. Douglas served as chief mourner, although there reportedly was an altercation at the grave between him and Robbie Ross. This struggle developed into a feud which would preview the later litigations between the two former lovers of Wilde. After Wilde's death, Douglas established a close friendship with Olive Custance, an heiress, poet and bisexual. They married on 4 March 1902. Olive Custance was in a relationship with the writer Natalie Barney when she and Douglas first met. Barney and Douglas eventually became close friends and Barney