Llud Llaw Eraint, "Lludd of the Silver Hand", son of Beli Mawr, is a legendary hero from Welsh mythology. As Nudd Llaw Eraint (the earlier form of his name, cognate of the Irish Nuada Airgetlám, derived from the pre-Roman British god Nodens) he is the father of Gwynn ap Nudd. He is probably the source of king Lud from Geoffrey of Monmouth's History of the Kings of Britain.