William II de Cantilupe (died 1251) (anciently Cantelow, Cantelou, Canteloupe, etc, Latinised to de Cantilupo),[2] 2nd feudal baron of Eaton Bray in Bedfordshire,[3] was an Anglo-Norman magnate.
He was the eldest son and heir of William I de Cantilupe (died 1239), 1st feudal baron of Eaton Bray, steward of the household to King John, a royal administrator and sheriff, by his wife Mazilia de Braci.
His younger brother was Walter de Cantilupe (1195-1266), Bishop of Worcester.
He became a retainer of Ranulf de Blondeville, 6th Earl of Chester and served with him on King Henry III's expedition to Brittany.
[5] Millicent survived him and in 1255[6] was awarded the custody of Princess Margaret, later Queen of Scots,[4] daughter of King Henry III.