Lludd Llaw Eraint in the context of "Amaethon"

*Nodens, *Nodons or *Nudens (reconstructed from the dative Nodenti or Nodonti) is a Celtic healing god worshipped in Ancient Britain. Although no physical depiction of him has survived, votive plaques found in a shrine at Lydney Park (Gloucestershire) indicate his connection with dogs, a beast associated with healing symbolism in antiquity. The deity is known in only one other location, in Cockersand Moss (Lancashire). He was equated on most inscriptions with the Roman god Mars (as a healer rather than as a warrior) and associated in a curse with Silvanus (a hunting-god). His name is cognate with that of later Celtic mythological figures, such as the Irish Nuada and the Welsh Nudd.

The philologist and author J. R. R. Tolkien was invited to investigate the Latin inscription, and scholars have noted several likely influences on his Middle-earth fantasy writings, including the Elvish smith, maker of Rings of Power, Celebrimbor, whose name, like that of Nuada's epithet Airgetlám, means 'Silver-hand'. Nodens appears, too, in the works of Arthur Machen, as well as H. P. Lovecraft's Cthulhu Mythos.

In Irish mythology, Nuada or Nuadu (modern spelling: Nuadha), known by the epithet Airgetlám (Airgeadlámh, meaning "silver hand/arm"), was the first king of the Tuatha Dé Danann. He is also called Nechtan and Nuadu Necht, and is sometimes believed to be Elcmar, husband of Boann. He is mostly known from the tale in which he loses his arm or hand in battle, and thus his kingship, but regains it after being magically healed by Dian Cécht. Nuada is thought to have been a god and is related to the British and Gaulish god Nodens, who is associated with hunting and fishing. His Welsh equivalent is Nudd or Lludd Llaw Eraint.