It looks like your DNA question is answered and I see you are interested in looking at your father's line. I took a look and see that we share a small DNA segment and I do not share any with your mother. So our connection is through your father. I did not find anyone that matches our connection, so for now the best thing to do for your father's side is to add detail on his parents and grandparents. When doing a search on Family Search I found what I believe to be the 1911 census for Emilien Armand Lariviere and his family. There is also a family file that looks like the right line, you may find both of these as useful.
Please drop me a note if you need help working with those files.