My grandparents were Andrew Kopec and Anna Goclon Kopec. They were born in Poland (Austria/Galicia - Rzesow (names of places I have documented). They settled in Johnstown, PA where they met and married and lived for a time. There were Slonka relatives though I do not know how related. I only met and visited one that I can recall in Brooklyn, NY. Because of the name Slonka and the place Johnstown I am replying. Maybe related somehow.