Saint Paternus
An abbot and bishop said to have associations with Dyfed.
He passed into the Arthurian legends through a single instance when it was said that Arthur had tried to procure Paternus's tunic. The ground opened and swallowed the King, and he was released only hafter he had begged forgiveness and repented of his sin.
The traditional pedigree of Cunedda makes Paternus the son of Tacitus and father of Aeturnus, but it appears that this character may be a separate one from Saint Paternus.