From the publisher’s description:
This is an important new study of the impact of the Norman Conquest. It provides the first full explanation of how the English and the Normans merged to become the same people. The author draws on anthropological theory, the latest scholarship on Anglo-Norman England, and sources ranging from legal documents to romances.
Thomas, Hugh M. (NHC Fellow, 1999–00). The English and the Normans: Ethnic Hostility, Assimilation, and Identity, 1066-c. 1220. New York: Oxford University Press, 2003. ISBN 9780199251230.