Marsus of Nantes

Marsus of Nantes is a hypothetical bishop of Nantes of the 6th century, presented as a disciple of Saint Melanius. He is said to have served between 537 and 541, then to have given up his office to become a hermit. His name does not appear in the episcopal lists; the only bishop of Nantes named Martius lived in the 4th century. Nevertheless he is traditionally venerated as a saint in the Western Church and remembered on 5 July in the Western calendar. His historical existence is uncertain.