Well it’s my grandfather’s parents. I can’t ask him as he has been dead for several years, they did have a Polish/Belarusian surname (Bernatovich) which got passed down to me. His family history never interested my grandfather. My grandmother does say that they were “Russians” and that my grandmother’a mum is probably of “Tatar” descent as she was rich and had a “slight” Asiatic appearance. That’s all I know.