Teulyddog

Saint Teulyddog was a medieval Welsh saint. Accounted a disciple of Saint Dubricius, Teulyddog is said to have fled with many others to Brittany during the Yellow Plague of Rhos in the 540s. Returning to Wales, he associated himself with Saint Teilo and was credited with the establishment of the clas in Carmarthen, which took its medieval name, Llan Teulyddog, in his honor. Following the Norman invasion of Wales, his patronage of the town was assumed by John the Evangelist.