There is no central index for BMDs in Canada....each province takes care of its own registrations. BMDs are also subject to privacy legislation with births generally protected for 100 years, marriages for 80, and deaths for 70 with some variation as seen in the BC deaths records. Some provinces have more online than others.
The dates you would be looking at would generally fall within the privacy timelines so we would be relying on things like newspaper obits and findagrave, etc to find info in many cases. The familysearch website also carries available Canadian and US records.
If you would like to try and make contact with family members....
You now have links to several obits on this and your other thread about William that have rellies named in them. You can use this link to the telephone directory to try and trace them. Put just last name in the person box and location in the place box.
https://www.canada411.caThe Canada Board has a Resource Section that you can explore.
PB