Geryon

as the poets tell us, this Geryon was a monstrous giant that had three heads. But the truth of the matter is, there was a city in the Euxine sea, call’d Tricarenia, [Tαικααηνιἀ (Greek), i.e. three heads] where Geryon dwelt in great reputation, and abounding in wealth, and, among the rest, had an admirable herd of oxen: Hercules coming to drive them away slew Geryon who oppos’d him; and they that saw him drive away the oxen admired at it, and to those that enquired concerning the matter, they answered, that Hercules had driven away the oxen of Triccarenian Geryon; from which some imagined that Geryon had three heads: and this gave birth to the fiction. Palæphatus.