I believe the only way to find what your ethnic background is, is to have your DNA done. One side of my family actually came from Switzerland and Austria but we always believed that line was only from Germany. That is just one example. For instance, you might trace a family line back to a county in England so you think you are English... But wait...Vikings took over there and settled at one point of time. SO you may find you are mostly Scandinavian, I did! DNA results opens minds.