Here's my latest find:
Jackson C. Frank - Wikipedia
https://en.wikipedia.org/wiki/Jackson_C._Frank
Jackson C. Frank : Blues Run The Game - YouTube
https://www.youtube.com/watch?v=RgY4GnLGsLQ
If you look at his bio on wikipedia, you'll see he knew whereof he sang. Simon & Garfunkel produced and covered this song.
Cheers,
john