Gofannon was one of the deities worshipped by the ancient Celts.[1] As the patron god of metal workers, Gofannon was the son of the goddessDôn.[1] His name appears as Goibniu in Irish mythology, where he additionally takes on the role of a divine hero who brewed an ale of immortality and a wonderful architect.[1]
In Welsh mythology, Gofannon killed his nephew, Dylan Eil Don, not knowing who he was.[2] One of the tasks given to Culhwch if he were to win the hand of Olwen was to get Gofannon to sharpen his brother Amaethon's plough.[3]