William de Warenne, 5th Earl of Surrey (b. 1166)
William de Warenne, 5th Earl of Surrey (born 1160s-1170s, died 27 May 1240) was the son of Hamelin de Warenne and Isabel, daughter of William de Warenne, 3rd Earl of Surrey. His father Hamelin granted him the manor of Appleby, North Lincolnshire.