Lady Henrietta Stewart (1682-1763) (1682–1763) Parents Lady Mary Douglas Alexander Stewart, 3rd Earl of Galloway Children William Cuninghame, 13th Earl of Glencairn Henrietta Cuninghame Margaret Cuninghame James Cuninghame James Cuninghame Malcolm Fleming Cuninghame Alexander Cuninghame Charles Cuninghame unknown son Cuninghame John Cuninghame Siblings Lady Margaret Stewart James Stewart, 5th Earl of Galloway John Stewart Alexander Stewart, 4th Earl of Galloway Partners William Cunningham, 12th Earl of Glencairn