Lludd and Llefelys

Lludd and Llefelys (Welsh: Cyfranc Lludd a Llefelys, "The adventure or encounter of Lludd and Llefelys") is a Middle Welsh prose tale written down in the 12th or 13th century; it was included in the Mabinogion by Lady Charlotte Guest in the 19th century. It tells of the Welsh hero Lludd Llaw Eraint — known as King Lud in Geoffrey of Monmouth's Historia Regum Britanniae — and his brother Llefelys.