And so Sir Marhaus arose and armed him, and then there was a mass sung afore him, and brake his fast, and so mounted on horseback in the court of the castle where they should do the battle. So there was the duke all ready on horseback, clean armed, and his six sons by him, and everych had a spear in his hand, and so they encountered, whereas the duke and his two sons brake their spears upon him, but Sir Marhaus held up his spear and touched none of them.

Then came the four sons by couple, and two of them brake their spears, and so did the other two. And all this while Sir Marhaus touched them not. Then Sir Marhaus ran to the duke, and smote him with his spear that horse and man fell to the earth, and so he served his sons; and then Sir Marhaus alighted down and bade the duke yield him or else he would slay him. And then some of his sons recovered, and would have set upon Sir Marhaus; then Sir Marhaus said to the duke, Cease thy sons, or else I will do the uttermost to you all. Then the duke saw he might not escape the death, he cried to his sons, and charged them to yield them to Sir Marhaus; and they kneeled all down and put the pommels of their swords to the knight, and so he received them. And then they helped up their father, and so by their cominal assent promised to Sir Marhaus never to be foes unto King Arthur, and thereupon at Whitsuntide after to come, he and his sons, and put them in the king’s grace.

Malory's Le Morte d'Arthur