Isabel de Warenne, Countess of Surrey English peer (1136–1203) Parents William de Warenne, 3rd Earl of Surrey Ela de Ponthieu Children Mahant de Warenne Adela de Warenne William de Warenne, 5th Earl of Surrey Isabella de Warenne Siblings Pilip FitzPatrick of Salisbury Patrick FitzPatrick of Salisbury Walter FitzPatrick of Salisbury William of Salisbury, 2nd Earl of Salisbury Partners William I, Count of Boulogne Hamelin de Warenne, Earl of Surrey