What would you have called Canada in 1876?
Interesting thing to come up in today: what would a regular person (not a politician or a journalist) have called Canada back when Laura Secord was around? Through my research, I think they would have referred to it as "the province of Canada" or "Canada." I can't find a lot of references in non-journalistic material written at the time to "Upper Canada."
Some research:
https://www.canada.ca/en/canadian-heritage/services/origin-name-canada.html
https://www.thecanadianencyclopedia.ca/en/article/lets-call-itefisga-feature