Jeanne de Dreux-Bretagne, Dame de Nogent-le-Rotrou French royal (1296–1364) Parents Yolande of Dreux Arthur II, Duke of Brittany Children Yolande of Dampierre Jean de Cassel, Seigneur de Cassel Siblings John IV, Duke of Brittany Beatrice of Brittany Marie de Montfort Blanche de Montfort Alice of Brittany Pierre de Bretagne Guy of Penthièvre John III, Duke of Brittany Partners Robert, Count of Marle