William d'Aubigny, 3rd Earl of Arundel English Earl of Arundel (died 1221) (1200–1221) Parents Maud de Saint Hilary William d'Aubigny, 2nd Earl of Arundel Children Hugh d'Aubigny, 5th Earl of Arundel William d'Aubigny, 4th Earl of Arundel Isabel d'Aubigny Cicely d'Aubigny Mallt ferch William d'Aubigny Nicole d'Aubigny Maud d'Aubigny Siblings Aveline de Clare, Countess of Essex Matilda de Clare Richard de Clare, 3rd Earl of Hertford Matilda d'Aubigny Alice d'Aubigny Partners Mabel of Chester