Stewart of Darnley Stewart of Darnley Stewart of Darnley was a notable Scots family, a branch of the Clan Stewart, who provided the English Stuart monarchs with their male-line Stuart descent, after the reunion of their branch with the royal Scottish branch, which led to the ultimate union of the two main kingdoms of Great Britain: England and Scotland. In 1565 the House of Stewart of Darnley was re-united with the Royal House of Stewart when Henry Stuart, Lord Darnley married his first cousin, Mary, Queen of Scots, both being grandchildren of Margaret Tudor, daughter of King Henry VII of England, and hence
Earl of Darnley eleventh Baron Clifton of Leighton Bromswold in the Peerage of England. Lord Darnley served as a Lord of the Bedchamber to Frederick, Prince of Wales, but died unmarried in 1747, aged 31. He was succeeded by his younger brother, the third Earl. He had earlier represented Athboy in the Irish House of Commons and Maidstone in the British House of Commons. On his death the titles passed to his eldest son, the fourth Earl. In 1828 he presented a claim as heir-general to the dukedom of Lennox, but the House of Lords did not come to any decision on the