I too am a decendant of FWC Hathenbruck and I have a little information. I have just started into genealogy. My grandmother had done a lot of it but most of it was lost when she passed away.
I would love to hear what Brody and Gene had about Rosilla and FWC Hathenbruck as well.
I too should have some pictures, or my parents do, that I will get copies of. Randy Lewis who contributed to the books mentioned is a cousin of mine and I need to contact him about getting copies of his information as well.
Thanks for any help that you may have to offer.