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 Douglas, Lord of Liddesdale is that the Lord of Douglas had discovered his godson’s treacherous plan, which he sought to prevent. For this, however, there is no evidence. The last theory is that the Lord of Douglas was furious that Liddesdale had given away the lands that he (the Lord Douglas) had desired, and indeed he did eventually claim them as his own. On 8 October 1354 the English king seized Hermitage Castle, but returned it to Elizabeth, the widow of the Knight, after she swore fealty to him and agreed to allow an English garrison to be kept there. He further promised to