I've been listening to Jelly Roll Blues, 3 related songs by Peg Leg Howell (New Jelly Roll Blues), George Carter (Hot Jelly Roll Blues) and Butch Cage & Willie B. Thomas. What a great melody!! I believe Peg Leg Howell's was the first of these 3. It is based on Jelly Roll Blues by Jelly Roll Morton, I think this was his first big hit and became somewhat of a jazz standard as far as I can tell.
The Butch Cage fiddle part is a takeoff on the earlier Eddie Anthony version, but played out of a different position, I think. I hear the Eddie Anthony one as being from a closed position, B or C (like Beaver Slide Rag and Georgia Crawl), I hear the Butch Cage as being out of A position (but tuned about half step low).
Any earlier versions, or other notable early blues versions, of this song? That first line is so catchy, no wonder it was a hit for Ferd Morton.