The spread of Christianity in Bardolino probably started between the fourth and the fifth century during the Saint Zeno and Vigilio episcopate (respectively the bishop of Verona and Trento).
The evangelization process was a long-lasting one and it was influenced by several factors such as the presence of soldiers and merchants converted to Christianity and the hermits living on Monte Baldo.
However the ecclesiastical authorities started their domain over the area only in the ninth or tenth century; there were different districts, each one having its own parish church, that is a church guided by an archpriest who had jurisdiction over a specific area.