Isabella Mortimer, Countess of Arundel English countess (1247–1300) Parents Maud de Braose, Baroness Wigmore Roger Mortimer, 1st Baron Mortimer Children Maud FitzAlan Richard FitzAlan, 8th Earl of Arundel Siblings Roger Mortimer de Chirk Edmund Mortimer, 2nd Baron Mortimer Sir Geoffrey Mortimer Sir William Mortimer Margaret de Mortimer Ralph Mortimer Partners Ralph d'Arderne John FitzAlan, 7th Earl of Arundel Robert de Hastang