Taking a look today at a "freepages" site on "Rootsweb" that you might find interesting under the "Ohio Cemeteries" category.
It may be particularly useful to you if you are researching the following surnames in the state of Ohio:
Not all of Ohio's 88 counties are represented, but 41 of them are listed and some have searchable cemeteries that include gravestone photographs.
An interesting one is at the Sabina Cemetery, the Edwards Family stones. It is a monument and gravestone grouping photograph by Angela Hudson.
So, you might wish to spend some time browsing around this "Rootsweb" freepages website.
You never know what information you might find that could help you or someone else you know who is researching ancestors that came to Ohio, lived on its land, and were laid to rest in one its pioneer burying grounds.