Albertina Provencal married to Ludger Duperrault was my maternal grandmother's sister. I haven't been able to trace them any further back than St Damien de Brandon, Quebec. Her father was Simon Clausse Provencal whose second wife was Aurore Thibodeau. His father was Pre-Laurant Clausse Provencal married to Angelique Jennotte-Lach.
That's all the information that I've been aboe to find. If you ever find anything further back, please contact me.