Hi Lynn. O.K. You need to trace back through death certificates and immigration records. Which descendent of Johannes came to America?If it was his son find out where the son died and when and get a copy of their death certificate. That may show where the father was from. (Children rarely moved away from their parents). Try to pin down what year the son or whoever came to the U.S. You can possibly find the persons name on a ship passengere's list (if you know date of arrival in America) or possibly a certificate of citizenship for Johannes' descendent at the National Archives. My own grandmother was names Anna Florentina Albrecht and was born in Wehnershof, Kreis Schlochau in 1818. Kreis Schlochau was in West Preussen (West Prussia) Good luck!!