Roud 6, "Long Lankin." This horrifying and dark folk song comes from the Northern UK, dating back to at least the 15th century. It's not an easy one to digest and its origins are as clouded in darkness and mystery as the story it tells. WARNING: This episode is pretty creepy and probably not suited for anyone very young or with a very young-like proclivity to fear.

Citations and other content at:

http://everyfolksong.xyz