My father grew up in Marionville. I have heard of the Marion family from him numerous times, we are not related I think. I have Dagenais family but have not really worked on it much yet.
I just really wanted to make the comment that it is so eery to come across a post like this and have already heard about two of the names all my life. You will find that the Marion and the Gregoires' are interrelated in Marionville and Embrun.