Henry William Carless Davis, 1911 Encyclopædia Britannica, Volume 11… (1911)
“ About 1103 he wrote or inspired a series of tracts which defended the king’s prerogative and attacked the oecumenical pretensions of the papacy with great freedom of language. He changed sides in 1105, becoming a stanch friend and supporter of Anselm. Gerard was a man of considerable learning and ability ”
