El Mabinogion, vol. 1

And Owain followed the road, as Kynon had done, till he came to the green tree; and he beheld the fountain, and the slab beside the fountain with the bowl upon it. And Owain took the bowl, and threw a bowlful of water upon the slab. And lo, the thunder was heard, and after the thunder came the shower, much more violent than Kynon had described, and after the shower, the sky became bright. And when Owain looked at the tree, there was not one leaf upon it. And immediately the birds came, and settled upon the tree, and sang. And when their song was most pleasing to Owain, he beheld a Knight coming towards him through the valley, and he prepared to receive him; and encountered him violently. Having broken both their lances, they drew their swords, and fought blade to blade. Then Owain struck the Knight a blow through his helmet, head piece and visor, and through the skin, and the flesh, and the bone, until it wounded the very brain. Then the black Knight felt that he had received a mortal wound, upon which he turned his horse's head, and fled. And Owain pursued him, and followed close upon him, although he was not near enough to strike him with his sword. Thereupon Owain descried a vast and resplendent Castle. And they came to the Castle gate. And the black Knight was allowed to enter, and the portcullis was let fall upon Owain; and it struck his horse behind the saddle, and cut him in two, and carried away the rowels of the spurs that were upon Owain's heels. And the portcullis descended to the floor. And the rowels of the spurs and part of the horse were without, and Owain, with the other part of the horse remained between the two gates, and the inner gate was closed, so that Owain could not go thence; and Owain was in a perplexing situation.…