I am playing as brittany and i declared a claim war for the duchy of normandy against the king of france. during the middle of the war the count of morthain declared war on the duke of normandy. Now when i sue for peace against france the count of morthain remains a part of france even though he is dejure norman. Is there anything i can do to make it so i can get all of the duchy instead of just whatever stayed loyal to the former norman duke?