There is a lot of information here and I have most if not all of it. The German records came from Ralph Ehr from Germany itself. I talked to Gerald one time when I was in Milwaukee and filled in a missing branch. Would be willing to share branches I have so you don't have to do quite so much searching. Jacob Ehr is the earliest know ancestor who was born circa 1712 at Bettingen, which was then in Luxembourg very near the border of what was then Prussia. He married Maria Hauer who died 2 October 1799. My aunt did a lot of this research but Ralph did the most.
Marge