fictional. In Middle Welsh versions of Geoffrey's Historia he was called Nynniaw. In Geoffrey's story, Nennius is said to have fought Caesar in personal...

Mawr and nephew of Arianrhod, Llefelys, Penarddun, Afallach, Gofannon, Nynniaw, Peibaw, and Caswallawn. Based on their shared patronymic (ap Nudd), his...

corruption of Vivian, but it is now considered more likely derived from Welsh Nynniaw, which is itself of uncertain origin, but likely renders Nennius. Bébinn...