I do not have information that directly answers any of your questions but, interestingly, I am also trying to trace my LaJoie ancestors from Kent, Ontario to Bay City and Saginaw, Michigan in the late 1800s. None of the names you mentioned are familiar to me. The names I am looking for are (H)Omer, Elodie Eloise, Homer, Leo, Rodrigue, Emile, Ernest, Claire, Jourdenay (sp?), Euclid LaJoie. Any hits?