Charles Grafton from Oldenburg, B 1827

I am looking for any information about my Great-Grandfather, Charles
Grafton, born in Oldenburg 19 May 1827.
We believe he immigrated to the USA in about 1846. He lived in Ohio,
then Kentucky and finally in Alabama.

I will live in Germany for the next year or two, and plan to travel to
Oldenburg in pursuit of information.

I would greatly appreciate any information, advice, or contact
information for a possible visit.

Terry McCoy