It was started by Clovis I, regulus of Tournai, with the insistence of his wife, Clotilde and Saint Remigius, the bishop of Reims.
This contrasted Nicene Christianity, whose followers believe that God the Father, Jesus, and the Holy Spirit are three persons of one being (consubstantiality).
[2] Clovis eventually converted to Catholicism following the Battle of Tolbiac on Christmas Day 508[3][4] in a small church in the vicinity of the subsequent Abbey of Saint-Remi in Reims; a statue of his baptism by Saint Remigius can still be seen there.
The king's Catholic baptism was of immense importance in the subsequent history of Western and Central Europe in general, for Clovis expanded his dominion over almost all of Gaul.
Catholicism offered certain advantages to Clovis as he fought to distinguish his rule among many competing power centers in Western Europe.