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
James Douglas, 1st Lord Dalkeith James Douglas, 1st Lord Dalkeith James Douglas, 1st Lord Dalkeith (born after 1372, died before 22 May 1441) was a Scottish nobleman born in Dalkeith, Midlothian, Scotland to Sir James Douglas and Agnes Dunbar. James was the brother of Nicholas Douglas, 1st Lord of Mains. Lord Dalkeith descended from Andrew Douglas of Hermiston (or "Herdmanston") (d.b. 1277), younger son of Archibald I, Lord of Douglas (fl. c. 1198–1238). Andrew was succeeded by his son William Douglas of Hermiston, a signatory of the Ragman Roll in 1296. William of Hermiston's son, James Douglas of Lothian succeeded his father and produced two