Well, it'd be hard not to know the pope is German when you live in Germany...
Seriously, nothing to be ashamed of, GG. I'd expect more people to know J.-Paul II was from Poland because he was much more famouse and he also was the first non-Italian pope in recent times indeed. I guess most people have seen his real name Karol Wojtyla and know he was from Poland.
But it seems pretty normal to me people outside Western Europe don't know much about the actual pope, unless the pope means anything to them. He's still more a "transition pope" so far.
Well I think it is something you should know it is just general education!