Yes, your Quebecois ancestors would be considered Canadian-born.
But this opportunity to seek citizenship may be time limited as it’s an interim measure in place until the government can pass legislation to amend the citizenship act to address the issues found in the Bjorkquist decision.
Your ancestors wouldn’t have birth certificates as there wasn’t civil registration of births at that time but there is a database of baptismal records (which are valid for proof of birth from that time).
That subreddit has several people who have applied based on great-great grandparents who were born in the 19th century.
Best to look at the FAQs there. The forms are on the IRCC site but the information isn’t easily navigated around the interim measure.
One of the things in the interview, that’s super interesting, is that the original script had a scene that would have made it absolutely unequivocal that Hemmer was killed.
And it was shot, with some significant Sfx challenges.
The interviewers asked Bruce if there were any scenes left in the cutting room floor and he responded that there was.
:::The actor was in harness for a falling scene in which he would have been fighting off young Gorn. He had been pleased to have the opportunity to have a heroic on-screen:::
But the scene was cut despite it being challenging production-wise, all the more so with a blind actor in prosthetics.
So, one has to wonder if the showrunners decided to keep the door open for Hemmer to return…