[quote=@babbysama]
So [@Aristo], can you clarify something for me? 

Is there a difference between the Ambrusian Order (the heretic burners) and Fiorentianism proper? Just trying to get it right, cuz my next post involves some sweet infidel burning action. 
[/quote]

Alrighty; Fiorentianism is the name of the religion, like Christianity. The Ambrusian Church is the name of the dominant religious sect, in the same way that Catholicism or Protestantism are denominations of Christianity.
However, on Antova, the Ambrusians are the only real Fiorentinan hierarchy of note. There aren't any other religious institutions comparable enough to take notice. So the terms Ambrusian Church and "Fiorentianism proper" can be used interchangeably.