May
11
Saint Mamerto of Vienne
May 11th
V century
Obispo
In Vienne, in the Gallia Lugdunensis, St. Mamerto, Bishop, who, on the occasion of an imminent misfortune, instituted a solemn litanies to the preparatory Triduum of the feast of the Ascension of the Lord (c. 475) in this city.