I know this request was some time ago. Did you get the answers you needed about your father? My father was David S Eberwein in Lebanon, In. His brother - Andrew and wife Evelyn live in the Bainbridge/Roachdale area of Indiana. Their Son Michael died in 2002 and I believe their daughter Kathleen is still living.
Samuel D. Eberwein and Mary had 6 boys and 4 girls. Vernon, the oldest brother to Andrew and David my father, died in a hay wagon accident, and his wife couldn't take care of the 5 children left. So, 3 of the 9 remaining siblings divided up the 5 children to take care of them. Andrew and Evelyn took the oldest child, Don. I was 12 and I faintly remember going to his funeral. I recall him being dressed in a military uniform. I'm not sure what he died from.
If you would like to have Andrew's phone number, who I believe is still living, I can give it to you.
If you haven't located your father yet, I hope this will help give you the answers you need.
By the way, my Dad and Mom took 2 boys around 12 & 13 named Gerald and Clay. Olive took a teenage boy and girl named "Dicky" and I think Shirley.