Ogmios was the Celtic deity of eloquence. He is described as resembling a more elderly version of Heracles, and uses his powers of persuasion to bind men to himself, with stories describing thin, long chains connecting his tongue to the ears of his followers.

Irish mythology is the body of myths indigenous to the island of Ireland. It was originally passed down orally in the prehistoric era. In the early medieval era, some myths were transcribed by Christian monks, who heavily altered and Christianised the myths. Irish mythology is the best-preserved branch of Celtic mythology.