Parthenii Nicaensis De Amatoriis Affectionibus (Basel, 1531), 48, describes how as Hercules was returning towards Greece with the cattle of Geryon, some of them were stolen by Celtina, daughter of Brettanus, who refused to return them unless Hercules slept with her first. Hercules obliged, and she bore a son named Celtus, from whom the Celts took their name.