William de Moravia, 5th Earl of Sutherland Scottish chief of Clan Sutherland (1350–1370) Parents Margaret of Mar Kenneth de Moravia, 4th Earl of Sutherland Children Robert de Moravia, 6th Earl of Sutherland John Sutherland, Master of Sutherland Kenneth Sutherland Siblings Eustachia Sutherland Nicholas Sutherland Isabella of Strathbogie David II Strathbogie, Earl of Atholl Partners Joan Menteith Margaret Bruce