But within a while Sir Tristram greatly longed to see Cornwall, and Sir Kay Hedius desired to go with him. So they took ship; but as soon as they were at sea the wind blew them upon the coast of North Wales, nigh to Castle Perilous, hard by a forest wherein were many strange adventures ofttimes to be met. Then said Sir Tristram to Sir Kay Hedius, "Let us prove some of them ere we depart." So they took their horses and rode forth.
When they had ridden a mile or more, Sir Tristram spied a goodly knight before him well armed, who sat by a clear fountain with a strong horse near him, tied to an oak-tree. "Fair sir," said he, when they came near, "ye seem to be a knight errant by your arms and harness, therefore make ready now to joust with one of us, or both."
Thereat the knight spake not, but took his shield and buckled it round his neck, and leaping on his horse caught a spear from his squire's hand.
Then said Sir Kay Hedius to Sir Tristram, "Let me assay him."
"Do thy best," said he.
So the two knights met, and Sir Kay Hedius fell sorely wounded in the breast.
"Thou hast well jousted," cried Sir Tristram to the knight; "now make ready for me!"
"I am ready," answered he, and encountered him, and smote him so heavily that he fell down from his horse. Whereat, being ashamed, he put his shield before him, and drew his sword, crying to the strange knight to do likewise. Then they fought on foot for well nigh two hours, till they were both weary.
At last Sir Tristram said, "In all my life I never met a knight so strong and well-breathed as ye be. It were a pity we should further hurt each other. Hold thy hand, fair knight, and tell me thy name."
"That will I," answered he, "if thou wilt tell me thine."