William gave generously to the church; from 1035 to 1066, the Norman aristocracy founded at least 20 new monastic houses, including William's 2 monasteries in Caen, a remarkable expansion of religious life in the duchy.
Vilhelm gav generøse gaver til kirken; fra 1035 til 1066 grundlagde det normanniske aristokrati mindst 20 nye klostre, inklusive de to i Caen, hvilket var en bemærkelsesværdig udvidelse af det religiøse liv i hertugdømmet.