My son't great-great grandfather, John Lubischer married Elizabeth Ebbe. I'm doing a tree for my son, so I started going through the Ebbe family after I found Elizabeth (born 1879).
From there I went to Geroge T Ebbe (born 1858) to Peter Ebbe (born abt 1824) and his brother Jacob - that's about where you are - BUT THEN, I got a hint and found another Jacob Ebbe (born abt 1669) from Heidelberg, Baiertal, Baden, Germany.
This was from a tree, not from a public "source". The name of the tree is the Rock Family Tree
If you do a search on Jacob Ebbe of Heidelberg, Baiertal, Baden, Germany lots of public trees pop up.