Peter, I'm honored by your involvement, brief as it is today.
My father didn't have birth-siblings that I know of. He did have some others (I'll check at Hilse-40 for specifics.)
HOWEVER, his mom came from Germany (ran away from, really) to sequester herself in our FarAway Land, the USA.
I can't afford to have a genealogical expert research my father's family line. I also have very little information about my father : See Hilse-40 for details.
Fact(s): Rudolf Berg was born to Anna Elisabeth Berg in her youth. He was separated (deliberately, I think, by her)from her, his mother; & he didn't know who his father was. I want to know all about that earliest part of his life. I've been digging around, AND I am here asking for accurate help with this. (Is anyone with genealogical working skills LISTENING and ABLE to help?)
Let me know whatever is facts (to a researcher who's listening).