History of Jack of the Lantern
An Irish legend tells of a man named Jack, who struck up a bargain with the devil, and then backed out. After Jack died, neither heaven nor hell wanted his soul, so he was doomed to wander the earth for all eternity of with nothing more than a turnip lantern to light his way. He was called "Jack of the Lantern" which eventually became just Jack-o-Lantern.History.com: History of Halloween: The Jack-o-Lantern