I'll be curious to see how your application goes! I have a somewhat closer connection (my mother's mother's parents were both born in British Columbia) but my read of C-3 was it only applies beyond the first generation if each subsequent ancestor was "physically present in Canada for at least 1,095 days" before procreating. My grandmother and mother didn't live in Canada at all, so my conclusion was that I'm not Canadian. I'd be excited to be wrong, though!
I'll be curious to see how your application goes! I have a somewhat closer connection (my mother's mother's parents were both born in British Columbia) but my read of C-3 was it only applies beyond the first generation if each subsequent ancestor was "physically present in Canada for at least 1,095 days" before procreating. My grandmother and mother didn't live in Canada at all, so my conclusion was that I'm not Canadian. I'd be excited to be wrong, though!