Hessen Jews prior 1700 #germany

Peter Heilbrunn

I have traced my Heilbrunn family as well as others back to very early 18th century, when I hit a brick wall. Where would these Jews have previously lived? Where might I find information about them. 

Peter Heilbrunn

Reuven Stern

You may try Alemania Judaica  , I found a lot of useful information in this web site.
Reuven Stern, Kfar Vradim Israel