I have a Cecile Gervais born 17 Sep 1671 in Montreal. Parents were Jean Gervaise (b. 24 Mar 1616, m. 03 Feb 1654, d. 12 Mar 1690) and Anne Archambault (b. 1621, d. 29 Jul 1699). Jean's parents were Urbain Gervaise (b. 1589) and Jeanne Pebise (Herisse?) (b. 1593). Anne's parents were Jacques Archambault and Francoise Tourault.
Cecile married Francois Xavier Prudhomme. I have good information on her descendants as well as Francois's line.