I can't help you, but I do know a lady in Germany who can almost certainly help you. She is a volunteer and her name is Gaby. You can contact her at
find-your-family@t-online.deShe helped me find my cousin's family a few months ago. She is very fluent in English and has great resources. I would highly recommend you at least contact her to discuss your situation. She found our family in a matter of a few days! And it sounds like you have some very helpful information.
Good luck!
Linda W