I have been trying to get through this stubborn brick wall, ad have managed to find the family living in Wuppertal, but was probably not born here. It is not great news, but I thought I could try to look through nearby parishes (apparently Wuppertal is not online), and eventually hopefully find something. If all else fails.
But I am so confused about where to find such records online. I would be willing to pay a subscription if it is likely to yield any results, I checked FS records, and someone helped me look at Ancestry. We found the families in the address book so we know at least the basics are correct, name and family. But it didn't give much more.
I was hoping for some more advice. Hopefully there is some to give.