Bethóc

daughter of Gille Críst, Earl of Angus by his wife, Marjorie, youngest daughter of Henry of Scotland, 3rd Earl of Huntingdon and his wife, Ada de Warenne.

Ada de Warenne was a Scottish princess, the Anglo-Norman wife of Henry of Scotland, Earl of Northumbria and Earl of Huntingdon. She was the daughter of William de Warenne, 2nd Earl of Surrey by Elizabeth of Vermandois, and a great-granddaughter of Henry I of France.