William of Breteuil 11th & 12th century Benedictine abbot, lord of Breteuil, and Roman Catholic saint (d. 1130) Parents Alice de Toeni William FitzOsbern, 1st Earl of Hereford Children Isabel of Breteuil Eustace de Pacy Siblings Roger de Breteuil, 2nd Earl of Hereford Emma de Guader, Countess of Norfolk