We have a Y-DNA project at FamilyTreeDNA on the McGaha/McGahey (etc) surname. If you know of a direct male descendant of the Rutherford County family, please consider participating in the study. We'd like to know if these folks migrated down from VA or PA; there are quite a few participants so far and the results could help direct your research. See the site at http://www.familytreedna.com/public/McGaughey/
click on the Y-DNA Results tab. THANKS.