Thanks for the info! Very interesting. So far I have not been able to find a connection to your Mahlon (1772-1859), but am still looking. I recently went to Leesburg to look for more info and came up empty.They may very well be connected though I think mine would be the poorer cousins of your Morrises! My Morrises tended to be brickmakers and coopers and owned very little land. Another reason they are somewhat hard to trace.
I have also not found any connection to the Mahlon from Ohio 1807-1872.