It must not be thought, however, that in pagan Ireland Fairyland was altogether conceived as a Hades or place of the dead. We have already seen that in some of its types and aspects it was inherently nothing of the sort; as when, for example, it came to be confused with the Land of the Gods. In all likelihood these separate paradises and deadlands of a nature so various were the result of the stratified beliefs of successive races dwelling in the same region. A conquering race would scarcely credit that its heroes would, after death, betake themselves to the deadland of the beaten and enslaved aborigines. The gods of vanquished races might be conceived as presiding over spheres of the dead for which their victors would have nothing but contempt, and which, because of that very contempt, might come to be conceived as hells or places of a debased and grovelling kind, pestiferous regions which only the spirits of despised "natives" or the undesirable might inhabit.
Lewis Spence, British Fairy Origins
afterlife, fairies, fairy, hell