Hollister, 2001, p. 54. argument is based on a passage in Robert of Torigny, which says that in 1096, when Robert Curthose went on Crusade and pawned the duchy to William Rufus, Henry received ex integro the counties of Coutances and Bayeux save only Bayeux and Caen, a grant Hollister thought was probably a "renewal" rather than a new patronage. Hollister, C. Warren (2001). Henry I [edited and completed by Amanda Clark Frost]. Yale English Monarchs. New Haven: Yale University Press. ISBN0-300-08858-2.