The legend of the Lady of the Wood is contained in the Iolo MSS., and is of considerable antiquity. It is a most fascinating tale: Einion, the son of Gwalchmai, 'was one fine summer morning walking in the woods of Treveilir,' when 'he beheld a graceful slender lady of elegant growth, and delicate feature, and her complexion surpassing every white and red in the morning dawn and the mountain snow, and every beautiful colour in the blossoms of wood, field, and hill. And then he felt in his heart an inconceivable commotion of affection, and he approached her in a courteous manner, and she also approached him in the same manner; and he saluted her, and she returned his salutation; and by these mutual salutations he perceived that his society was not disagreeable to her. He then chanced to cast his eye upon her foot, and he saw that she had hoofs instead of feet, and he became exceedingly dissatisfied,' as well he might. But the lady gave him to understand that he must pay no attention to this trifling freak of nature. 'Thou must,' she said, 'follow me wheresoever I go, as long as I continue in my beauty.' The son of Gwalchmai thereupon asked permission to go and say good-bye to his wife, at least. This the lady agreed to; 'but,' said she, 'I shall be with thee, invisible to all but thyself.' 'So he went, and the goblin went with him; and when he saw Angharad, his wife, he saw her a hag like one grown old, but he retained the recollection of days past, and still felt extreme affection for her, but he was not able to loose himself from the bond in which he was. "It is necessary for me," said he, "to part for a time, I know not how long, from thee, Angharad, and from thee, my son, Einion," and they wept together, and broke a gold ring between them; he kept one half and Angharad the other, and they took their leave of each other, and he went with the Lady of the Wood, and knew not where; for a powerful illusion was upon him, and he saw not any place, or person, or object under its true and proper appearance, excepting the half of the ring alone. And after being a long time, he knew not how long, with the goblin, the Lady of the Wood, he looked one morning as the sun was rising upon the half of the ring, and he bethought him to place it in the most precious place he could, and he resolved to put it under his eyelid; and as he was endeavouring to do so, he could see a man in white apparel, and mounted on a snow-white horse, coming towards him, and that person asked him what he did there; and he told him that he was cherishing an afflicting remembrance of his wife Angharad. "Dost thou desire to see her?" said the man in white. "I do," said Einion, "above all things, and all happiness of the world." "If so," said the man in white, "get upon this horse, behind me;" and that Einion did, and looking around he could not see any appearance of the Lady of the Wood, the goblin, excepting the track of hoofs of marvellous and monstrous size, as if journeying towards the north. "What delusion art thou under?" said the man in white. Then Einion answered him and told everything how it occurred 'twixt him and the goblin. "Take this white staff in thy hand," said the man in white, and Einion took it. And the man in white told him to desire whatever he wished for. The first thing he desired was to see the Lady of the Wood, for he was not yet completely delivered from the illusion. And then she appeared to him in size a hideous and monstrous witch, a thousand times more repulsive of aspect than the most frightful things seen upon earth. And Einion uttered a cry of terror; and the man in white cast his cloak over Einion, and in less than a twinkling Einion alighted as he wished on the hill of Treveilir, by his own house, where he knew scarcely any one, nor did any one know him.' The goblin meantime had gone to Einion's wife, in the disguise of a richly apparelled knight, and made love to her, pretending that her husband was dead. 'And the illusion fell upon her; and seeing that she should become a noble lady, higher than any in Wales, she named a day for her marriage with him. And there was a great preparation of every elegant and sumptuous apparel, and of meats and drinks, and of every honourable guest, and every excellence of song and string, and every preparation of banquet and festive entertainment.' Now there was a beautiful harp in Angharad's room, which the goblin knight desired should be played on; 'and the harpers present, the best in Wales, tried to put it in tune, and were not able.' But Einion presented himself at the house, and offered to play on it. Angharad, being under an illusion, 'saw him as an old, decrepit, withered, grey-haired man, stooping with age, and dressed in rags.' Einion tuned the harp, 'and played on it the air which Angharad loved. And she marvelled exceedingly, and asked him who he was. And he answered in song: ... "Einion the golden-hearted." ...