I was born in Canada and grew up speaking English with my parents. My Chinese-born mother immigrated to Canada as a high school student and my father, also an immigrant from Hong Kong in the 1970s, taught culinary classes in English. However, my grandparents and other elderly family members were not fluent in English and spoke predominantly Cantonese at home.
It's why my parents put down Cantonese as the language most spoken at home when filling out my public school registration form.