Born in Lord of Baye, France. Studied at the abbey of Lérins, France. Worked with Saint Germanus of Auxerre and Saint Lupus of Troyes to fight the Pelagian heresy. Negotiated with Attila the Hun, and saved the city of Châlons, France from being sacked. Travelling evangelist, he founded several churches, hospices, convents and monasteries, brought many to the faith, and many to join monastic orders. Bishop of Châlons, France from 433 to 480, serving for 47 years.

Died in  September 7, 480 in Baye, France of natural causes. His relics re-interred at the church of Saint Andrew in Châlons, France in 860 by Bishop Erchanraus; the church was later renamed Saint Alpin. Some relics enshrined in the cathedral of Châlons and in other locations around the region. Some relics lost and reliquaries stolen during the anti–Christian excesses of the French Revolution; surviving relics were stored in the cathedral of Châlons