Saint Maudez was a 5th or 6th-century monk of Irish origin who is primarily recognized as a saint of Brittany. After arriving in Cornwall, he established a hermitage on the coast, a location that eventually became known as St Mawes. He later traveled to Brittany, where he founded a hermitage at Lanmodez and eventually settled on the island of Gueldénez with two disciples. He is remembered for his ascetic life and his significant influence on the religious landscape of the Brittany and Cornwall regions.