Hey, Leadfingers - I used to sing that song - 'The Folker' - I got it from the singing(?) of Fred Wedlock in the 70s. My version (well, his) is slightly different:

"I'm Leadfingers Wedlock and my story's seldom told
And I massacre folk music with a yard of German plywood and a capo..."

No idea, offhand, who wrote it, unless it was someone called Steve Turner.   Hang on....