Arthuret
…early in the reign of the King of Strathclyde, Rhydderch Hael, (patron of St. Kentigern, and Myrddin's supposed brother-in-law), between the warlord Gwenddoleu ap Ceidio and his cousins Peredur and Gwrgi, Princes of either Ebrauc (modern York), or possibly from Gwynedd. In this battle, Gwenddoleu lost his life, and it…