Something that I get the feeling you might not be aware of:
Just like the U.S., Germany, too, has always been made up of STATES.We are talking here about what was until 1945 Germany's largest state by far, PRUSSIA (in German: Preussen, or if written with the German character "scharfes S", Preußen; pronounced: PROY-s'n), the capital of which was the city of BERLIN.(Following German unification in 1871, Berlin became Germany's national capital as well.)Due to its vast size, Prussia was divided into provinces.
To give you an idea of what you're up against, here is the link to a map of Germany as it was from its unification under Prussia's Bismarck in 1871 until 1918.You will see Germany's states, including Prussia, Germany's largest state by far, and its provinces.You will note how vast Prussia was.It stretched from East Prussia in the northeast, all the way to and including the Rhineland in the west.That's a distance of close to 900 miles!
Nobody here will be able to assist you until you supply a lot more information about the people you are interested in.