Fly, Etain changed into a, 147; Lugh takes the form of a, 159; a sacred, 416. _Folklore, Ethnology in._ See _Ethnology_. Folk-tales, Irish, 233-240; Welsh, 371. Fomors, Gaelic deities of Death, Darkness, and the Sea, 11, 48-50, 67, 70, 76, 83, 86, 88, 89, 90, 98, 107-117, 120, 122, 157, 205, 225, 229, 230, 252, 269, 274, 327, 406; meaning of the name, 48; their war with the Tuatha Dé Danann, 107-117; are the Lochlannach in the Fenian sagas, 205. Forgall the Wily, father of Emer, 162, 163, 164, 184. Fotla, a goddess representing Ireland, 125; an ancient name of Ireland, 126. “Four Ancient Books of Wales”, the, 11, 15. See also Skene. “Four Branches of the Mabinogi”, the, 14, 15, 251, 278, 289, 312, 355. “Four-cornered castle”, the, 366. Frazer’s _Golden Bough_, 33. “Frivolous Battles of Britain, The Three”, 334. Frogs, sacred, 416. Fury, Great, and Little Fury, two swords of Manannán, 60, 217. Gabhra, battle of, 222, 223, 225, 315. Gabius, a Roman consul, 385. Gabriel Hounds, the, 392. _Gae bolg_, Cuchulainn’s spear, 170, 173, 178. Gaels, 68, 69, 70, 71, 76, 93, 108, 119, 124, 149, 183, 203, 204, 230, 357. Gaiar, son of Manannán, 202. Gaillion, Fir. See Fir Gaillion. Galahad, Sir, 362, 368, 369. _Galan-mai_, Welsh spring festival, 408. _Gan Ceanach_, 247. Garden of the Hesperides, the, 95, 98, 99. Gargantua, Rabelais’, 386. Gast Rhymri’s cubs, 347, 349. Gaul, 22, 274, 276, 383, 384, 385. Gauls, the, 22, 23, 119, 230. Gavida, 238, 239. Gavidjeen Go, 235. Gawain, Sir, 360, 363, 364, 369, 375. _Geasa_, taboos among the Irish Celts, 177, 195, 216. _Genii locorum_, 43. Geoffrey of Monmouth, 9, 121, 251, 254, 259, 276, 323, 324, 330, 336, 372, 373-376, 381, 384. George’s Hill, Saint, 29. Geraint, 312, 387. Gildas, a British writer, 400. “Glamour, the Realm of”, an old name for Dyfed, 279. Glamour put on Cuchulainn by Cathbad, 178; by the daughters of Calatin, 179, 180; put on the sons of Usnach, 198; on Arianrod, 264, 265; on Dyfed, 298. Glass Castle, of the Fomors, 67; a synonym for the other world, 320, 367. Glastonbury, 260, 329. Glastonbury Tor, 272, 390. Glenn Faisi, 130. Glora, Isle of, 144, 145, 146. Glyn Cûch, 279, 281. Gobhan Saer, the, 232, 235, 240. Goibniu, Gaelic god of smithcraft, 61, 84, 86, 98, 109, 110, 141, 231, 232, 238, 239, 261, 371; forges the weapons of the Tuatha Dé Danann, 61, 109; kills Ruadan, 110; his ale, 61; survives in tradition as the Gobhan Saer, _q.v._; as a character in folk-tale, 232-240. See Gavida and Gavidjeen Go. Goidel, a mythical ancestor of the Irish, 120. Goidels, the, 21, 22, 23, 24, 35. Golden bough, the mistletoe the, 33. Golden Pillars, king of the. See Easal. Goll, 209, 211, 222. Gomme, Mr. G. L., 20, 35, 69, 412, 413, 414, 416. Gonorilla, daughter of Leir, 381, 382. Gore, 357. See Gower. Goreu, Arthur’s cousin, 317, 338. Gorias, a city of the Tuatha Dé Danann, 71, 72, 97.