Elton Britt. Now there's a name. Thanks Crankee.
"Cowboy Jack" Guthrie's only hit, as well. Jack was Woody's cousin and died young....not before the lawsuit though. Woody apparently "gave" the song to his cuz, but when the bucks came in, thought better of it (or Marjorie did) and they got the copyright changed.
You can find an album of Cowboy Jack Guthrie if you try hard enough. He's typical of a lot of 40s "Western singers" and I quite like his version of the song.