I am of emigrant stock. To the best of my knowledge, I am approximately:
25% Norwegian
25% Czech
25% Purssian (Gollnick is a Prussian name)
25% Irish (the part that doesn't show much)
The best explaination of Prussia I have ever heard is: sometimes Polish, sometimes Russian, sometimes German, always confused. It was absorbed non-violently by Nazi Germany in 1934 and not reconstituted after WWII. Most of my ancestors came to the US as refugees fleeing WWI.