I'm a Cormier and not only is my dad a Cormier, but my mom actually has cormier on her side too (from 150 yrs back before anyone starts thinking incest lol).
You might want to do some research in Rayne/Crowley. The Rayne cemetery is full of Cormiers, and from what I'm told you can get records for the Acadia parish Cormiers from the record room in the basement of the Crowley court house. I know you aren't looking for them in Acadia parish but they all came from the same family in the mid 1700s so you might find your lead there. I'm in the process of finding the rest of my cormiers from both sides and seeing where they split and branched off.