William of Poitiers (c. 1020–1090), in an early account of the battle, rendered Hamon in Latin as "Haimonem agnomine Dentatum.
[11] Early in the Battle of Val-ès-Dunes, King Henry I of France (r. 1027–1060), who had sided with the duke, was knocked off his horse by Hamon.
[13] William of Malmesbury (c. 1095–1143) wrote that King Henry commanded his men to give Hamon an honorable burial "in admiration of his valour.
[17] The Grenville pedigree also claimed that Hamon Dentatus was a younger son of Mauger, Count of Corbeil and thus grandson of Richard I, Duke of Normandy.
[18] Historian and genealogist J. Horace Round contended that the Granville family had "hatched [the connection] in the seventeenth century... wishing to exalt Hamon Dentatus," whom they claimed as their ancestor.