Are there any other good accounts of a Barbarian Kings conversion other than Gregory’s?

How “Christian” was Clovis and how many parallels were there with Constantine..

… other than the similar nature of their conversion.

What was the effect of Clovis converting to Catholicism?

I’ve just read that Clovis becoming a Catholic was one of the biggest turning points for the Catholic Church? Why was it so significant? It could be that his support of Catholicism over other sects like Donatism or Arianism made the Empire united and established the Catholic Church as having the highest spritual authority, meaning they could dictate definitions of heresy etc.