OHHHHH, Joe! Gotta get going on your education. Clarence Tom Ashley ~~ here are several sources to check out.
metalab.unc.edu/doug/DocWat/Clarence.html
http://www.tiac.net/users/mkatzman/jct/johnmain.html
http://kinrowan.com/doc_watson_times_two.htm
http://www.amroutes.com/deep.html
Just teasing actually, you likely just didn't recognize the name the way they had it listed. I'd pretty much bet it was him, but then, I've been wrong before . . .
I seem to remember a nice version by Suzanne Edmundson (now Thomas) on the Green Grass Cloggers Rounder Album, but I could be wrong about that, too. Can't check it,as that is one of the albums that I only have on tape anymore, and consequently there is just no way I could come up with it in a timely fashion. Now that you are retired, I guess you could come out here and organize my stuff!