Thank you so much for the information. I don't know if Elfriede married again as she would have been 59 at the time of Johns death and he was her first husband. I feel this woman - my adopted sister's mother - is like a wilo-the- wisp. I think I have found a piece of info & them woosh she's gone. I wonder if she and John had any children which would give my sister half-siblings.
I feel I need to stress that family meetings, reunions, are not the purpose of my quest. I want to give my sister her background as a gift. We are both adopted and when you are adopted you feel like a rootless tree. Just planted somewhere with no roots to hold you in place.
Thank you for the time you have spent.
Time is the most valuable thing you can give someone as it can never be recaptured.