St Gwrthwl, a saint whose date is uncertain, founded the church of Llanwrthwl; he is commemorated on March 2 [REF].
A commemorative stone, from the precincts of the extinct chapel of Llanwrthwl, was found at Maes Llanwrthwl (Llanwrthwl Field) with a Paulinus monument and the epitaph: Talorm | Adventvh | MAQVERIGH | FIUIVS.