Um. My maternal grandfather was Francoise Eugene Theriault, from the Acadians. Big, Handsome gaulish man. Severe hearing disability from childhood illness. They often spoke French at home. My mother recalls only enough french to call me names. I don’t remember any of it. My paternal grandfather, and all before him, did not outbreed at all, and stayed within the ranks of english protestants. It’s genetic. It’s obvious it’s genetic.