Nuadu (Nuada Airgetlám)

Nuadu, often called Nuada Airgetlám ('silver hand' or 'silver arm'), is king of the Tuatha Dé Danann in medieval Irish literature. Britannica notes that inscriptions show he was originally a god; he is linked to the British god Nodens, worshipped at a Roman-period temple at Lydney Park, and to the Welsh Lludd Llaw Eraint.

In Cath Maige Tuired (The Battle of Mag Tuired), Nuadu loses his arm fighting the Fir Bolg. Because a king had to be physically whole, he gives up the throne to Bres, who rules badly. The physician Dian Cécht makes him a working silver arm, and Dian Cécht's son Miach later restores a living one, so Nuadu takes back the kingship. In the Second Battle of Mag Tuired against the Fomorians, he yields command to Lugh and is killed by Balor.

His sword is one of the four treasures the Tuatha Dé brought to Ireland. These stories survive in Christian-era manuscripts that reworked older pagan tradition.