Brother of Saint Cadoc of Llancarfan; may have been the nephew of Saint Petroc. Monk. Sent to Cornwall by Cadoc, he founded the monastery and parish now know as Saint Glywys. May have been martyred; records are unclear.
- “Saint Gluvias“. CatholicSaints.Info. 12 April 2009. Web. 27 February 2017. <>