When the king was horsed he thanked heartily Sir Tristram, and desired to wit his name; but he would not tell him, but that he was a poor knight adventurous; and so he bare King Arthur fellowship till he met with some of his knights. And within a while he met with Sir Ector de Maris, and he knew not King Arthur nor Sir Tristram, and he desired to joust with one of them. Then Sir Tristram rode unto Sir Ector, and smote him from his horse. And when he had done so he came again to the king and said: My lord, yonder is one of your knights, he may bare you fellowship, and another day that deed that I have done for you I trust to God ye shall understand that I would do you service. Alas, said King Arthur, let me wit what ye are? Not at this time, said Sir Tristram. So he departed and left King Arthur and Sir Ector together.
How Sir Tristram came to La Beale Isoud, and how Kehydius began to love Beale Isoud, and of a letter that Tristram found.