Then King Mark had great despite of the renown of Sir Tristram, and then he chased him out of Cornwall: yet was he nephew unto King Mark, but he had great suspicion unto Sir Tristram because of his queen, La Beale Isoud; for him seemed that there was too much love between them both. So when Sir Tristram departed out of Cornwall into England King Mark heard of the great prowess that Sir Tristram did there, the which grieved him sore. So he sent on his part men to espy what deeds he did. And the queen sent privily on her part spies to know what deeds he had done, for great love was between them twain. So when the messengers were come home they told the truth as they had heard, that he passed all other knights but if it were Sir Launcelot. Then King Mark was right heavy of these tidings, and as glad was La Beale Isoud. Then in great despite he took with him two good knights and two squires, and disguised himself, and took his way into England, to the intent for to slay Sir Tristram. And one of these two knights hight Bersules, and the other knight was called Amant. So as they rode King Mark asked a knight that he met, where he should find King Arthur. He said: At Camelot. Also he asked that knight after Sir Tristram, whether he heard of him in the court of King Arthur.