Basically, the easiest way to find Charles' parents' names would be to find his marriage record, & for that, you would need his wife's name.
Which led me to look up Pierre's baptism record. I did find a Pierre-Adjutor Rochet baptized in Chambly on 26 June 1859 (born on the 25th). His parents are given as Edouard Rochet & Hermine Cognac.
https://familysearch.org/pal:/MM9.3.1/TH-1942-27981-23352-38...Edouard Rochet married Lucille Cognac in Chambly on 16 Aug. 1842. Eduoard's parents were Charles Rochet & Marie-Louise Langevin.
https://familysearch.org/pal:/MM9.3.1/TH-1971-27972-7783-74?...Of course, the given names don't all match up, but that's not unusual for the Quebec records.