Gwrgi or Gurci Catraeth and York (?), fl 560s-580s.
Gwrgi was the son of Eleuther and brother of Peredur. The two brothers may have either jointly ruled, or split their kingdom, in which case Gwrgi almost certainly inherited the lands around Catraeth (modern Catterick). The two brothers are always recorded together and are reckoned amongst the last defenders of the British against the invading Angles in north-eastern Britain.540