And as Gawaine followed the hart by the cry of the hounds, even afore him there was a great river, and the hart swam over; and as Sir Gawaine would follow after, there stood a knight over the other side, and said, Sir knight, come not over after this hart but if thou wilt joust with me. I will not fail as for that, said Sir Gawaine, to follow the quest that I am in, and so made his horse to swim over the water. And anon they gat their spears and ran together full hard; but Sir Gawaine smote him off his horse, and then he turned his horse and bade him yield him. Nay, said the knight, not so, though thou have the better of me on horseback. I pray thee, valiant knight, alight afoot, and match we together with swords. What is your name? said Sir Gawaine. Allardin of the Isles, said the other. Then either dressed their shields and smote together, but Sir Gawaine smote him so hard through the helm that it went to the brains, and the knight fell down dead. Ah! said Gaheris, that was a mighty stroke of a young knight.
How the Hart Was Chased Into a Castle and There Slain, and How Sir Gawaine Slew a Lady.