Cindy,
I know this is an old post, but if you are still watching this board, I am interested in the names you mentioned because they match much of my research. Possibly: your great grandfather Emil, son of Wilehlm, brother of Herman F.W. Klabunde - my 3rd great grandfather. Herman and Wilhelm also had a sister that I can't find, but I do know her married name was something like Grantien. Carl Klabunde (1816) and wife Caroline Zemke (1820) were their parents. Let me know if this seems like a match so we can share whatever information we each have. Thanks!
Kenneth Klabunde