Po Cholley is also known by his real name, Charlie Robertson. There's next to nothing about him online, except, um, his email, phone number and street address. I hope that's not his home number -- I wouldn't want all you Stagger Lee goons calling him at home. (All right, he's also linked to here and here.)
So this is a nice, loose take on Stag, from a 2008 live tribute to Mississippi John Hurt, though Cholley ranges through several other versions of the song, from Furry Lewis' "when you lose your money" moral to even a paraphrase from Stan Freberg's "Heartbreak Hotel".
The buy link goes to that album, but he only has this one song on it, and sadly I can't find a place to buy anything else by him anywhere. If anyone out there knows anything, shout it out in the comments.