sentences:  On the death of Hugh IV Geoffrey Martel, Count of Anjou occupied Maine, expelling Berthe de Blois and Gervais de Château du Loir, Bishop of Le Mans, who fled to the court of Normandy.In 1056, Herbert escaped from Le Mans, and himself went to the court of William, duke of Normandy.There his sister Marguerite was betrothed to Robert Curthose, but died before the marriage could take place.