Constance of Normandy Duchess of Brittany as wife of Alan IV, Duke of Brittany (d. 1090) Parents Matilda of Flanders William the Conqueror Children Siblings Henry I of England Cecilia of Normandy Adeliza Adela of Normandy Robert Curthose Richard of Normandy William II of England Matilda of Normandy Agatha of Normandy Alberta Partners Alan IV
