Then they rode together a great pace, until they came to a little turret or castle; and underneath that castle they saw a knight standing upon foot fighting with two knights; and so Sir Tristram beheld them, and at the last the two knights smote down the one knight, and that one of them unlaced his helm to have slain him. And the Lady Annowre gat King Arthur’s sword in her hand to have stricken off his head. And therewithal came Sir Tristram with all his might, crying: Traitress, traitress, leave that. And anon there Sir Tristram smote the one of the knights through the body that he fell dead; and then he rashed to the other and smote his back asunder; and in the meanwhile the Lady of the Lake cried to King Arthur: Let not that false lady escape. Then King Arthur overtook her, and with the same sword he smote off her head, and the Lady of the Lake took up her head and hung it up by the hair of her saddle-bow. And then Sir Tristram horsed King Arthur and rode forth with him, but he charged the Lady of the Lake not to discover his name as at that time.