When Etain heard this she stood motionless and as one that dreams awake, for it seemed to her as if she must follow that music whithersoever it went on earth or beyond the earth. But at last remembrance came upon her and she said to the stranger, "Who art thou, that I, the High King's wife, should follow a nameless man and betray my troth?" And he said, "Thy troth was due to me before it was due to him, and, moreover, were it not for me thou hadst broken it already. I am Midir the Proud, a prince among the people of Dana, and thy husband, Etain. Thus it was, that when I took thee to wife in the Land of Youth, the jealousy of thy rival, Fuamnach, was awakened; and having decoyed me from home by a false report, she changed thee by magical arts into a butterfly and then contrived a mighty tempest that drove thee abroad. Seven years wast thou borne hither and thither on the blast till chance blew thee into the fairy palace of Angus my kinsman, by the waters of the Boyne. But Angus knew thee, for the Fairy Folk may not disguise themselves from each other, and he built for thee a magical sunny bower with open windows, through which thou mightest pass, and about it were all manner of blossoming herbs and shrubs, and on the odour and honey of these thou didst live and grow fair and well nourished. But in the end Fuamnach got tidings of thee, and again the druid tempest descended and blew thee forth for another seven years of wandering and woe. Then it chanced that thou wert blown through the roof-window of the Dún of Etar by the Bay of Cichmany, and fell into the goblet from which his wife was drinking, and thee she drank down with that draught of ale. And in due time thou wast born again in the guise of a mortal maid and daughter to Etar the Warrior. But thou art no mortal, nor of mortal kin, for it is one thousand and twelve years from the time when thou wast born in Fairy Land till Etar's wife bore thee as a child on earth."

Then Etain was bewildered, and her mind ran back on many a half-forgotten thing and she gazed as into a gulf of visions, full of dim shapes, strange and glorious. And Midir as she looked at him again seemed transfigured, taller and mightier than before, and a light flame flickered from his helmet's crest and moved like wings about his shoulders.

But at last she said, "I know not what thou sayest if it be truth or not, but this I know, that I am the wife of the High King and I will not break my troth." "It were broken already," said Midir, "but for me, for I it was who laid a druidic sleep on Ailill, and it was I who came to thee in his shape that thy honour might not be stained." Etain said, "I learned then that honour is more than life." "But if Eochy the High King consent to let thee go," said Midir, "wilt thou then come with me to my land and thine?" "In that case," said Etain "I will go."

And the time went by, and Etain abode in Tara, and the High King did justice and made war and held the great Assembly as he was used. But one day in summer Eochy arose very early to breathe the morning air, and he stood by himself leaning on the rampart of his great Dún, and looking over the flowery plain of Bregia. And as he thus gazed he was aware of a young warrior standing by his side. Grey-eyed the youth was, and golden-haired, and he was splendidly armed and apparelled as beseemed the lord of a great clan of the Gael. Eochy bade him welcome courteously, and asked him of the cause of his coming. "I am come," he said, "to play a game of chess with thee, O King, for thou art renowned for thy skill in that game, and to test that skill am I come. And my name is Midir, of the People of Dana, whom they have called The Proud."

"Willingly," said the King; "but I have here no chessboard, and mine is in the chamber where the Queen is sleeping."

"That is easily remedied," said Midir, and he drew from his cloak a folding chessboard whose squares were alternate gold and silver. From a men-bag made of brazen chainwork he drew out a set of men adorned with flashing jewels, and he set them in array.

"I will not play," then said Eochy, "unless we play for a stake."

"For what stake shall we play, then?" said Midir.

"I care not," said Eochy; "but do thou perform tasks for me if I win and I shall bestow of my treasures upon thee if I lose."

So they played a game, and Eochy won. Then Eochy bade Midir clear the plains of Meath about Tara from rocks and stones, and Midir brought at night a great host of the Fairy Folk, and it was done. And again he played with Eochy, and again he lost, and this time he cut down the forest of Breg. The third time Midir lost again, and his task was to build a causeway across the moor of Lamrach. Now at night, while Midir and the fairy host were labouring at the causeway and their oxen drawing to it innumerable loads of earth and gravel, the steward of Eochy stole out and hid himself to watch them, for it was a prohibition to see them at work. And he observed that the fairy oxen were not harnessed with a thong across their foreheads, that the pull might be upon their brows and necks, as was the manner with the Gael, but with yokes upon their shoulders. This he reported to Eochy, who found it good; and he ordered that henceforth the children of the Gael should harness their plough-oxen with the yoke upon their shoulders; and so it was done from that day forth. Hence Eochy got his name of Airem, or "The Ploughman," for he was the first of the Gael to put the yoke upon the shoulder of the ox.