You're welcome. You are lucky that you can speak & write & read French, I can read it only at a very elementery level.
Regarding tombstones (in fact, after rereading your query, I wondered if you ment the cemetery where your ancestor was buried). He was probably buried in the church cemetery, you would have to write them. However, if memory serves, the plots would be reused and several people may be buried in the same plot, so there may be no marker.
By the way, I do have a French-Canadian Descendants site here on Genealogy Wise. Good luck in your research. Jim.