The Christian saint Mamertus (400-475) was born as the son of a wealthy Gallo-Roman family from Lyon in Vienne. The name was derived from the Roman god of war Mars. He became Bishop of Vienne in 461. Around 464 he quarreled with Pope Hilary (+468) on a redivision of the dioceses in southern France. Mamertus himself set up a new bishop in St. Dié and was sharply reprimanded by the Pope. After numerous fires, earthquakes and major devastation in his hometown, Mamertus introduced the "Three Bittgang" before the Ascension of Heaven in 470, as well as processions to avert danger and to inspire divine help.
Mamertus is one of the five Eisheiligen His feast day is May 11 (in France also October 13 and November 14). He is the patron saint of nurses, shepherds and fire-fighters; against breast diseases, fever and drought, Two Bauernregeln are: 1) Mamertus, Pankratius . Servatius - stand for cold and displeasure 2) The holy Mamerz - has made of ice a heart . See also below Customs in viticulture and wine Saints,