Vortiporius

King of Dyfed, Wales in the 6th century A.D. 
Vortiporius was Aergol Lawhir's son and heir, son of Triffyn Farfog, son of Aed Brosc; a Deisi invader from Ireland, of the dynasty of Eochaid Allmuir.
He had a son named Cyngar.
Also: Vortipor, Gwrdeber, or Gwerthefyr