I'm so sorry it's taken me so long to get back to you; I'm traveling and without consistent wifi service.
Since first posing about my Hahn family back in '01 & '02, I've researched the family back to France and the mid to late 1700s.
I've written a book (for family only) about my Hahn line and would be more than happy to email you a copy if you're interested.
I won't be back home and near my files until late June, but I can send it to you then if you want. It'll take several emails because it's a large file.
Let me know. BTW, my email address is: firstname.lastname@example.org