Yr Ellyll Dan Or Goblin Fire
: FAIRY MEN CAPTURED.
: Welsh Folk-lore
The Rev. T. H. Evans, in his History of the Parish of Llanwddyn, states
that in that parish Will of the Wisp is called Yr Ellyll Dan. This
is indeed the common name for the Ignis fatuus in most, if not in all
parts of Wales, but in some places where English is spoken it is better
known by the English term, Jack o' Lantern, or Jack y Lantern.