The Dullahan, The headless horseman of the Irish and Celtic mythology and folklore is well known to be a harbinger of death. But unlike the banshee, which is a wailing fairy, the Dullahan doesn't warn people from a forthcoming death, the Dullahan harvests the souls of those  about to die. The myths and legends surrounding the Dullahan was known far all around Europe and was later involved in the American Culture, through The legend of Sleepy Hollow written by the American author Washington Irving.