Answer:
The answer is Clovis.
Explanation:
King Clovis (466-511 AD) was not the first Frankish king, but he established the kingdom of the Franks as a major political unit. He founded the Merovingian dynasty, he ruled much of the Gaul. His baptism took place toward the end of the 5th century (there´s no historical certainty about the exact date). He became a key ally of the Church and its spreading of Christianity.
I believe religion authority is a permission that is given by your religion.