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
William the Hardy, Lord of Douglas with Douglas and another Scottish prisoner Thomas de Morham; both were later committed to the Tower of London on 12 October 1297 with Douglas meeting his end there in 1298 due to mistreatment. William the Hardy was twice married and had three sons. By Elizabeth, daughter of Alexander Stewart, 4th High Steward of Scotland: By Eleanor de Lovaine of Groby, daughter-in-law of William de Ferrers, 5th Earl of Derby and great-great-granddaughter of Godfrey III of Leuven: William the Hardy, Lord of Douglas Sir William Douglas ""le Hardi"" ("the Bold"), Lord of Douglas (1255 – January 24, 1298) was a Scottish