Alan IV, Duke of Brittany of William the Bastard, Duke of Normandy (later to become known as William the Conqueror) support of rebels in Brittany against Alan's maternal uncle, Conan II. Conan II died in late 1066 during a campaign in Anjou, and was succeeded by Alan's parents, Conan's sister Hawise and her husband Hoel II. Hoel ruled as regent from Hawise's death in 1072 until Alan reached his majority in 1084. To prevent further hostilities during his invasion of England, William I married his daughter Constance to the new duke Alan in 1087. The marriage ceremonies may have taken place in Bayeux in Normandy.
William the Conqueror household departments. William cultivated close relations with the church in his duchy. He took part in church councils and made several appointments to the Norman episcopate, including the appointment of Maurilius as Archbishop of Rouen. Another important appointment was that of William's half-brother Odo as Bishop of Bayeux in either 1049 or 1050. He also relied on the clergy for advice, including Lanfranc, a non-Norman who rose to become one of William's prominent ecclesiastical advisors in the late 1040s and remained so throughout the 1050s and 1060s. William gave generously to the church; from 1035 to 1066, the Norman aristocracy