Wirt Sikes, British Goblins: Welsh Folk-lore…
“ The common or popular theory, however, is in Wales the poetico-religious one. This is, in a word, the belief that the Tylwyth Teg are the souls of dead mortals not bad enough for hell nor good enough for heaven. They are doomed to live on earth, to dwell in secret places, until the resurrection day, when they will be admitted into paradise. ”
