Dictionary of Battles / From the Earliest Date to the Present Time

by Thomas Benfield Harbottle

Gerberoi.

Fought 1080, between the troops of William the Conqueror, and those of his son Robert, who claimed the Dukedom of Normandy, and was receiving aid from Philip I of France. Robert was defeated and made prisoner, and, obtaining his father's forgiveness, resigned his claim to the Dukedom.