William de Warenne, 3rd Earl of Surrey

William de Warenne, 3rd Earl of Surrey ( * 1119, † 1148 ) was an Anglo -Norman nobleman of the house of Warenne.

He was the eldest son of William de Warenne, 2nd Earl of Surrey and Elizabeth of Vermandois. He was thus great-grandson of the French King Henry I, a half-brother of Robert de Beaumont, 2nd Earl of Leicester, Waleran de Beaumont, 1st Earl of Worcester and Count of Meulan, and Hugh de Beaumont, 1st Earl of Bedford.

William remained loyal to the English King Stephen. He fought in the Battle of Lincoln ( 1141 ) and was one of the military leaders that Matilda pursued after their escape from Winchester and Robert of Gloucester, the illegitimate son of the late King Henry I kidnapped.

He was one of those nobles who in Vezelay in 1146 - together with the French King Louis VII - took the cross and it broke up as a crusader in the Second Crusade. He was killed on the march through Anatolia near Laodicea in a Seljuk attack.

William married Adela (or Ela ) of Ponthieu, a daughter of Count Wilhelm II Talvas (or William III. Ponthieu of ) which in turn was a son of Robert of Bellême, 3rd Earl of Shrewsbury from the Montgomery house.

William and Adela had a daughter, Isabel ( Elizabeth), which was also his heir. She married her first husband William of Blois, the second son of King Stephen, Count of Boulogne and Mortain, who became by marriage the Earl of Surrey and Earl of Warenne ( Warren ). William of Blois died on October 11, 1159, the marriage remained childless.

His second wife Isabel married in 1163 Hamelin, an illegitimate son of Count Geoffrey V of Anjou, and thus half-brother of King Henry II, who also Earl of Warenne and Earl of Surrey was. Hamelin de Warenne adopted the family name and inherited the counties of him and to his offspring.