Who dated William Douglas, 1st Earl of Douglas?

William Douglas, 1st Earl of Douglas (c. 1323 – 1 May 1384) was a Scottish nobleman, peer, magnate, and head of the Black Douglas family. Under his leadership, the Black Douglases continued their climb to pre-eminence in Scottish politics begun under his uncle, Sir James the Good, as well as their military dominance of the south of Scotland.

Margaret Stewart, Countess of Angus (* um 1355; † um 1418), war eine schottische Adlige.