Mother's side, my mother's grandparents, I'm not sure if they were practising Jews, I do know for definite that their parents were, and that my mother's grandmother was killed in a nazi gas chamber, they didn't care if the person was a practising Jew or not, my great grandfather somehow escaped germany, and got to america, however, beleiving that his wife and children were dead he killed himself. He was however mistaken, his children were alive and well in the UK. They were able to leave germany just in time. (One of his children being my grandmother, the other being my err, I think that great uncle is the right term, they're both dead as well now though, natural causes. I know that neither of them were practising Jews. Well, at least not in their later live)