indicate the level to which a name has been verified.Meaning & History
Unknown etymology.In the First Branch of the Mabinogi, Hefeydd Hen ("Hefeydd the Old"), he is the father of Rhiannon.Hefeydd Hir ("hir" meaning "long" in Welsh, but also referring to distance in time), is mentioned as one of the Seven Knights left to take charge of the island of Britain when Brân went to rescue his sister in the Second Branch of the Mabinogi.