Everybody knows about Jeong Mongju's death, and Koreans are reminded of it again with the peddler goods version.
But recetnly I came across a bizarre take on that tragedy in the form of folktale text on google books. A book called Eerie tales from Old Korea. Look for the chapter "The DOnkey Maker" and you'll find this story.
How a bloddy political tragedy got turned into a franctured fairy tale is beyond me.