On the death of Hugh of Maine, Geoffrey Martel occupied Maine in a move contested by William and King Henry; eventually, they succeeded in driving Geoffrey from the county, and in the process, William was able to secure the Bellême family strongholds at Alençon and Domfort for himself. He was thus able to assert his overlordship over the Bellême family and compel them to act consistently in Norman interests. But in 1052 the king and Geoffrey Martel made common cause against William at the same time as some Norman nobles began to contest William's increasing power. Henry's about-face was probably motivated by a desire to retain dominance over Normandy, which was now threatened by William's growing mastery of his duchy. William was engaged in military actions against his own nobles throughout 1053, as well as with the new Archbishop of Rouen, Mauger. In February 1054 the king and the Norman rebels launched a double invasion of the duchy. Henry led the main thrust through the county of Évreux, while the other wing, under the king's brother Odo, invaded eastern Normandy.