William I "the Lion" (known in Gaelic as Uilliam Garbh

Margaret (1193–1259), married Hubert de Burgh, 1st Earl of Kent.
Isabella (1195–1253), married Roger Bigod, 4th Earl of Norfolk.
Alexander II of Scotland (1198–1249), reigned 1214–49.
Marjorie (1200–44), married Gilbert Marshal, 4th Earl of Pembroke.