William de Forz, 4th Earl of Albemarle English magnate (1150–1260) Parents Aveline de Montfichet William II de Forz, 3rd Earl of Albemarle Children Avice de Forz Thomas de Forz, Count of Aumale Aveline de Forz William de Forz John de Forz Partners Isabel de Forz, 8th Countess of Devon Christiana of Galloway