Since she was born before the Census records were enumerated, you need other sources to identify her parents. I saw a copy of her marriage license online and it won't help since it was just their two names written on a sheet of paper with the marriage date and others names.
I'd check my local library for books on Henry County, Tennessee. Check the library's World Cat directory and find out where books about this county are located and ask the library to do an inter-library transfer which is generally no charge unless you live in Oregon. Also check Google Books where you can find books online.
Do a Google search for henry county tennessee genealogical society. Some have some records online. Successful Searching!