and look in Crawford Co database my guess is thats where you find the Ashtabula Fonner's.
Some Greene Co., Pa Fonners moved into and thru OH in 1800's also on way to Fort Wayne, IN area, Illinois and elsewhere.
I have a lot of OH census on Fonners - if you have some names let me know or look in the different databases on the website. Let me know if you want to make additions or corrections to the website or need anything else. Thanks.