You may be interested in the following items at the West Virginia State Archives.
http://www.wvculture.org/hiStory/ag/15wvi.html

Contact historian Terry Lowry at terry.lowry@wvculture.org at the archives for additional information.
Have you ever considered donating scans or photocopies of the diary to the archives?
It would be a great way to honor the memory of your ancestor, and be a terrific primary source for future researchers.

What did he have to say about Cloyd's Mountain?