I'm also interested in the history of the Cincinnati and Covington area.
I'm especially interested in anything about my great-grandfather,
Charles Grafton, born in Oldenburg in 1827, who lived from about 1864 to
1870 in that area.
One great site I have found useful is:
http://apu.kentonlibrary.org/gen/gendb.php
It has a very user friendly search feature covering a number of data
bases.
Hope this helps.
Terry McCoy