Barb:
Just off the top of my head, the only connection I know of is that my great-grandfather, William Von Fange was married to Wilhelmina Nentrup; his brother John Dietrich Von Fange was married to Lizette Nentrup, Wilhelmina's sister! and their sister Cathryn Von Fange married an Aufdemberge, all in Bartholomew County during the 1860s. You might try my father Erich if you have additional questions:
fangmer@lni.net.
Paul