@Walter Hinteler,
Now, now Walter - if you expect me to maintain the physical borders of Germany over the millennium when they changed their (your) borders every few decade depending on this war or that skirmish or that King/Queen/Baron - well that just too much (even though I was born in Frankfurt).
Actually, since I was writing in the present tense, I should also be allowed to have a little leeway there also!
These types of arguments are also very present in my genealogical threads. Especially when discussing ethnicity 2-4,000 years ago. It is a difficult task.