Book of Saints – Mammertus


(Saint) Bishop (May 11) (5th century) The successor of Saint Simplicius in the See of Vienne (France). He is looked upon as the originator or reviver of the Rogation Day Processions, which he established in his Diocese in consequence of the many calamities which at that time afflicted his people. His learning and the miracles he wrought were renowned, among the latter being the extinction of two fierce fires which threatened to destroy Vienne, and which extinction Saint Avitus, his successor, in his Homily on the Rogations, calls miraculous. This Saint Mammertus is said to be the Bishop Mammertus who attended the Council of Aries (A.D. 475). He died in that same year. His body was transferred from Vienne to the Cathedral of Orleans in the middle of the sixth century, but was destroyed by the Calvinists a thousand years afterwards. The Rogation devotion was gradually propagated to the whole Western Church.

MLA Citation

  • Monks of Ramsgate. “Mammertus”. Book of Saints, 1921. CatholicSaints.Info. 16 November 2014. Web. 29 July 2021. <>