For starters, Irish faeries are not like tinkerbell. They like to play pranks. Like kidnapping babies and replacing them with mimics. The creature we’d recognize as the Headless Horseman is Irish folklore, as well as the whole concept of Halloween. Bram Stoker, an Irishman need not have borrowed from Eastern European traditions, because the Irish had a bloodsucking undead monster too.

One Irish one I remember is where a man with a hump on his back meets some of the other folk and they tke his hump and throw it onto the horizon where it becomes a hill. He thanks them and they become annoyed with his gratitude and pick up a bigger hill and give him a bigger hump than ever.