Thank you for responding to my notes.
It is interesting that Léontine married someone from Ham-North because her paternal grandparents had been married in the same area (St-Jean de Matha). It might happen that her grandfather was the only one to go to that area from a well-established family in Beaumont. I am quite familiar with that town because both my maternal and paternal ancestor were from that part of Québec.
I could send you the marriage data of Léontine's siblings, but keep in mind that all of them have passed away by now. However, they most likely have descendants living in that town or nearby. Also, keep in mind that the Deschene (many variations exist) had a double name: Miville dit (aka) Deschene.