How Can I Research My Roots Without Spending Money? - The Root
http://www.theroot.com/articles/history/2015/09/researching_family_roots_on_a_budget.htmlWhile searching for the other family members you noted in your question, we found a gravestone for Clara Jane (Johnson) Davis in the same section of the cemetery as your other kin. This seems a likely fit for your great-grandmother Clara Jane Johnson.
Submitted in section: Paranormal news 2015: How Can I Research My Roots Without Spending Money? - The Root