I have a John M. Harrell b Sep 10 1815. His parents were William and Martha Mellinger Harrell. Wm came from VA>n KY>sw OH. Martha b 1792 in Boone Co KY. They m 1809 in Miami Co OH. Some databases say their children were b in KY but I think sw OH is more likely unless they backtracked. Don't have a wife's name so I can't say for sure he's the guy you're looking for.