Ryan Weiden is not far from Nuremberg that is correct.
If you have a subscription for new issued stamps from the German postal service, you will receive the stamps from a central mailing office. One of them is Weiden in der Oberpfalz. I think others are in Frankfurt and Berlin, but I'am not sure.
I myself have no subscription. They are from my father.
Honestly, I like stamps on covers much more than stamps with cancels from the central mailing office.