I know this link is quite old, and perhaps you have abandoned it, but I have some info. for Zepherin Madore. I am his great-grandson, Christian Madore, and my parents have been researching the Madore (Laplante, and before that, Labouliere) line for some time. Here's what I know: Zepherin's father was Louis-Zepherin and his mother was Georgiana Petit-St. Pierre. Zepherin (at least the Zepherin who is my great-grandfather) married Arthemise Lebel. They had several children, including Silvio Madore, my grandfather. Sylvio had 6 children, including Paul Madore, my father. That is what I know. I also have tons of info for the line directly before Louis-Zepherin.
I hope that this message is somehow seen by you, even though this is an old link.