@Shaun - You're correct about the location of the findagrave reference, and where it ought to be. But, as mentioned, the headstone image only provides a married name, death date and age at death. The rest of the info is unsourced. Possibly good for hints, though.
Regarding non-pay places to look for data - there are dozens of references in the familysearch catalog for Madison Co., Kentucky - deeds, wills, probate records, vital records, etc.