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, Lord of Douglas II was deposed in a "coup" led by his wife and her lover, Roger Mortimer, Lord Wigmore. He was replaced by Edward III, his teenage son, though all power remained in the hands of Mortimer and Isabella. The new political arrangements in England effectively broke the truce with the former king, arranged some years before. Once again the raids began, with the intention of forcing concessions from the government. By mid-summer Douglas and Moray were ravaging Weardale and the adjacent valleys. On 10 July a large English army, under the nominal command of the young king, left York in a