Hi Barbara,
I suggest searching the Baltimore passenger lists. I have researched a dozen
or so separate families who ALL went from northern Germany to Cincinnati in
the mid-1800's, and ALL took the Bremen-to-Baltimore route. I have had luck
with the separate index rolls, but have also found people in the passenger
lists themselves who were not indexed. If you don't have access, maybe
someone can help. I used to have easy access, but no more.
Good Luck!
Bryan Kercher