My great grandfather was Agapit heli LaFerriere married to an Elizabeth Theriault. Maybe she was a sister to your relative? The parents of my Elizabeth Theriault were Edouard Theriault married to Luce Mallioux.I dont have your Lionel LaFerriere in my data base. Where were they living and do you know their dit name. Mine were Aurez dit LaFerriere. There was another line of LaFerriere that were the Charron dit LaFerriere branch. They are not related. There are many Mousseau married to LaFerrieres and Jubinville married to LaFerrieres but I dont have ones that match yours. Hope this makes sense. What is your mothers name?