Keredic
Keredic (Welsh: Ceredig) was a legendary king of the Britons, as recounted by Geoffrey of Monmouth. The origin of Geoffrey's character is unknown, but he is not depicted as a Saxon. According to Geoffrey, Keredic's rule was so unpopular that the Saxons enlisted the aid of an army of Vandals from Ireland to drive him from his kingdom.
Read more about Keredic.