Lludd Llaw Eraint

Lludd 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 Celtic god Nodens) he is the father of Gwyn ap Nudd. He is probably the source of king Lud from Geoffrey of Monmouth's History of the Kings of Britain.

In the Mabinogion tale of Lludd and Llefelys, which seems heavily influenced by Geoffrey of Monmouth's work, he is the ruler of Britain while his brother Llefelys ruled Gaul. Lludd calls on Llefelys to rid Britain of three plagues then afflicting the kingdom. According to legend, there was once a memorial to Lludd at the site of St Paul's Cathedral, London, near Ludgate, which is named after him.

The plagues of Lludd’s reign