The strife of Fomorians and Tuatha Dé Danann suggests the dualism of all nature religions. Demons or giants or monsters strive with gods in Hindu, Greek, and Teutonic mythology, and in Persia the primitive dualism of beneficent and hurtful powers of nature became an ethical dualism—the eternal opposition of good and evil. The sun is vanquished by cloud and storm, but shines forth again in vigour. Vegetation dies, but undergoes a yearly renewal. So in myth the immortal gods are wounded and slain in strife. But we must not push too far the analogy of the apparent strife of the elements and the wars of the gods. The one suggested the other, especially where the gods were elemental powers. But myth-making man easily developed the suggestion; gods were like men and "could never get eneuch o' fechtin'." The Celts knew of divine combats before their arrival in Ireland, and their own hostile powers were easily assimilated to the hostile gods of the aborigines.
The principal Fomorians are described as kings. Elatha was son of Nét, described by Cormac as "a battle god of the heathen Gael," i.e. he is one of the Tuatha Dé Danann, and has as wives two war-goddesses, Badb and Nemaind.187 Thus he resembles the Fomorian Tethra whose wife is a badb or "battle-crow," preying on the slain.188 Elatha's name, connected with words meaning "knowledge," suggests that he was an aboriginal culture-god.189 In the genealogies, Fomorians and Tuatha Dé Danann are inextricably mingled. Bres's temporary position as king of the Tuatha Déa may reflect some myth of the occasional supremacy of the powers of blight. Want and niggardliness characterise his reign, and after his defeat a better state of things prevails. Bres's consort was Brigit, and their son Ruadan, sent to spy on the Tuatha Dé Danann, was slain. His mother's wailing for him was the first mourning wail ever heard in Erin.190 Another god, Indech, was son of Déa Domnu, a Fomorian goddess of the deep, i.e. of the underworld and probably also of fertility, who may hold a position among the Fomorians similar to that of Danu among the Tuatha Dé Danann. Indech was slain by Ogma, who himself died of wounds received from his adversary.
Balor had a consort Cethlenn, whose venom killed Dagda. His one eye had become evil by contact with the poisonous fumes of a concoction which his father's Druids were preparing. The eyelid required four men to raise it, when his evil eye destroyed all on whom its glance fell. In this way Balor would have slain Lug at Mag-tured, but the god at once struck the eye with a sling-stone and slew him.191 Balor, like the Greek Medusa, is perhaps a personification of the evil eye, so much feared by the Celts. Healthful influences and magical charms avert it; hence Lug, a beneficent god, destroys Balor's maleficence.
Tethra, with Balor and Elatha, ruled over Erin at the coming of the Tuatha Dé Danann. From a phrase used in the story of Connla's visit to Elysium, "Thou art a hero of the men of Tethra," M. D'Arbois assumes that Tethra was ruler of Elysium, which he makes one with the land of the dead. The passage, however, bears a different interpretation, and though a Fomorian, Tethra, a god of war, might be regarded as lord of all warriors.192 Elysium was not the land of the dead, and when M. D'Arbois equates Tethra with Kronos, who after his defeat became ruler of a land of dead heroes, the analogy, like other analogies with Greek mythology, is misleading. He also equates Bres, as temporary king of the Tuatha Dé Danann, with Kronos, king of heaven in the age of gold. Kronos, again, slain by Zeus, is parallel to Balor slain by his grandson Lug. Tethra, Bres, and Balor are thus separate fragments of one god equivalent to Kronos.193 Yet their personalities are quite distinct. Each race works out its mythology for itself, and, while parallels are inevitable, we should not allow these to override the actual myths as they have come down to us.
Professor Rh^ys makes Bile, ancestor of the Milesians who came from Spain, a Goidelic counterpart of the Gaulish Dispater, lord of the dead, from whom the Gauls claimed descent. But Bile, neither a Fomorian nor of the Tuatha Dé Danann, is an imaginary and shadowy creation. Bile is next equated with a Brythonic Beli, assumed to be consort of Dôn, whose family are equivalent to the Tuatha Dé Danann.194 Beli was a mythic king whose reign was a kind of golden age, and if he was father of Dôn's children, which is doubtful, Bile would then be father of the Tuatha Dé Danann. But he is ancestor of the Milesians, their opponents according to the annalists. Beli is also equated with Elatha, and since Dôn, reputed consort of Beli, was grandmother of Llew, equated with Irish Lug, grandson of Balor, Balor is equivalent to Beli, whose name is regarded by Professor Rh^ys as related etymologically to Balor's.195 Bile, Balor, and Elatha are thus Goidelic equivalents of the shadowy Beli. But they also are quite distinct personalities, nor are they ever hinted at as ancestral gods of the Celts, or gods of a gloomy underworld. In Celtic belief the underworld was probably a fertile region and a place of light, nor were its gods harmful and evil, as Balor was.
On the whole, the Fomorians came to be regarded as the powers of nature in its hostile aspect. They personified blight, winter, darkness, and death, before which men trembled, yet were not wholly cast down, since the immortal gods of growth and light, rulers of the bright other-world, were on their side and fought against their enemies. Year by year the gods suffered deadly harm, but returned as conquerors to renew the struggle once more. Myth spoke of this as having happened once for all, but it went on continuously.196 Gods were immortal and only seemed to die. The strife was represented in ritual, since men believe that they can aid the gods by magic, rite, or prayer. Why, then, do hostile Fomorians and Tuatha Dé Danann intermarry? This happens in all mythologies, and it probably reflects, in the divine sphere, what takes place among men. Hostile peoples carry off each the other's women, or they have periods of friendliness and consequent intermarriage. Man makes his gods in his own image, and the problem is best explained by facts like these, exaggerated no doubt by the Irish annalists.
The Tuatha Dé Danann, in spite of their euhemerisation, are more than human. In the north where they learned magic, they dwelt in four cities, from each of which they brought a magical treasure—the stone of Fal, which "roared under every king," Lug's unconquerable spear, Nuada's irresistible sword, the Dagda's inexhaustible cauldron. But they are more than wizards or Druids. They are re-born as mortals; they have a divine world of their own, they interfere in and influence human affairs. The euhemerists did not go far enough, and more than once their divinity is practically acknowledged. When the Fian Caoilte and a woman of the Tuatha Dé Danann appear before S. Patrick, he asks, "Why is she youthful and beautiful, while you are old and wrinkled?" And Caoilte replies, "She is of the Tuatha Dé Danann, who are unfading and whose duration is perennial. I am of the sons of Milesius, that are perishable and fade away."197
After their conversion, the Celts, sons of Milesius, thought that the gods still existed in the hollow hills, their former dwellings and sanctuaries, or in far-off islands, still caring for their former worshippers. This tradition had its place with that which made them a race of men conquered by the Milesians—the victory of Christianity over paganism and its gods having been transmuted into a strife of races by the euhemerists. The new faith, not the people, conquered the old gods. The Tuatha Dé Danann became the Daoine-sidhe, a fairy folk, still occasionally called by their old name, just as individual fairy kings or queens bear the names of the ancient gods. The euhemerists gave the Fomorians a monstrous and demoniac character, which they did not always give to the Tuatha Dé Danann; in this continuing the old tradition that Fomorians