So when they had overtaken Sir Tristram, Sir Agravaine bade him: Turn, traitor knight. That is evil said, said Sir Tristram; and therewith he pulled out his sword, and smote Sir Agravaine such a buffet upon the helm that he tumbled down off his horse in a swoon, and he had a grievous wound. And then he turned to Gaheris, and Sir Tristram smote his sword and his helm together with such a might that Gaheris fell out of his saddle: and so Sir Tristram rode unto Joyous Gard, and there he alighted and unarmed him. So Sir Tristram told La Beale Isoud of all his adventure, as ye have heard to-fore. And when she heard him tell of Sir Dinadan: Sir, said she, is not that he that made the song by King Mark? That same is he, said Sir Tristram, for he is the best bourder and japer, and a noble knight of his hands, and the best fellow that I know, and all good knights love his fellowship. Alas, sir, said she, why brought ye not him with you? Have ye no care, said Sir Tristram, for he rideth to seek me in this country; and therefore he will not away till he have met with me. And there Sir Tristram told La Beale Isoud how Sir Dinadan held against all lovers. Right so there came in a varlet and told Sir Tristram how there was come an errant knight into the town, with such colours upon his shield.