) or hag (cailleach), or a sibling of the wizard. The sword-keeper oftentimes must be defeated (killed), which is not possible except by some secret means. Thus the hero or helper may resort to the sword of light as the only effective weapon against this enemy. But often the sword is not enough, and the supernatural enemy has to be attacked on a single vulnerable spot. The weak spot, moreover, may be an external soul (motif index E710) concealed somewhere in the world at large (inside animals, etc.); or, as in the case of "The Young King Of Easaidh Ruadh", this external soul is encased within a nested series of animals. Typically bound up with the quest for the sword of light is the quest for the "One Story" (' truth about women'), namely, the story of the faithless wife who transforms her husband into a wolf. The hero in some examples are compelled to perform (three) sets of tasks, aided by helpers, who may be the would-be bride, "helpful animals", or a supernatural being ("little green/red man"). Texts Below are the lists of tales where the sword of light occurs. Kittredge's sigla (K J L C1 O'F H c m) are given in boldface: Irish folktales "The Story of the Sculloge's son from Muskerry (Sceal Vhic Scoloige)" () K (in-tale) "Fios Fath an aon Sceil" (perfect narrative of the unique story)" "Adventure of the Sgolog and the Red" (GruagachEachtra air an sgolóig agus air an ngruagach ruadh) (, Gaelic Journal) J "The Weaver's Son and the Giant of the White Hill", (, Myths and Folk-lore of Ireland). "The Thirteenth Son of the King of Erin" ( Curtin, Myths) Leaduidhe na luaithe ("Ashypet" or "The Lazy Fellow") (Ó Fotharta/O'Foharty/O'Faherty (1892)) "Smallhead and the King's Sons" (Curtin (1892), repr. No. XXXIX) "Baranoir, son of a King in Erin, and the Daughter of King under the Wave" (Curtin (1893), repr. ed. Béaloideas 12 (1/2)) "Morraha; Brian More, son of the high-king of Erin, from the Well of Enchantments of Binn Edin" (; repr. ) L "Simon and Margaret" (Larminie) "Beauty of the World" (Larminie) "The King who had Twelve Sons" (Larminie) "Cud, Cad, and Micad", (, Hero-tales of Ireland). "Coldfeet and Queen of Lonesome Island", (Curtin, Hero-tales) "Art and Balor Beimenach", (Curtin, Hero-tales). C1 "The Shining Sword and the Knowledge of the Cause of the One Story about Women" (, ZCP 1))