Meanwhile Sir Modred, in great fear and pain, fled from the court, and rode until he found King Arthur, and told him all that had befallen. But the king would scarce believe him till he came and saw the bodies of Sir Agravaine and all the other knights.
Then felt he in himself that all was true, and with his passing grief his heart nigh broke. "Alas!" cried he, "now is the fellowship of the Round Table forever broken: yea, woe is me! I may not with my honor spare my queen."
Anon it was ordained that Queen Guinevere should be burned to death, because she had dishonored King Arthur.
But when Sir Gawain heard thereof, he came before the king, and said, "My lord, I counsel thee be not too hasty in this matter, but stay the judgment of the queen a season, for it may well be that Sir Lancelot was in her chamber for no evil, seeing she is greatly beholden to him for so many deeds done for her sake, and peradventure she had sent to him to thank him, and did it secretly that she might avoid slander."
But King Arthur answered, full of grief, "Alas! I may not help her; she is judged as any other woman."
Then he required Sir Gawain and his brethren, Sir Gaheris and Sir Gareth, to be ready to bear the queen to-morrow to the place of execution.
"Nay, noble lord," replied Sir Gawain, "that can I never do; for neither will my heart suffer me to see the queen die, nor shall men ever say I was of your counsel in this matter."
Then said his brother, "Ye may command us to be there, but since it is against our will, we will be without arms, that we may do no battle against her."
So on the morrow was Queen Guinevere led forth to die by fire, and a mighty crowd was there, of knights and nobles, armed and unarmed. And all the lords and ladies wept sore at that piteous sight. Then was she shriven by a priest, and the men came nigh to bind her to the stake and light the fire.
At that Sir Lancelot's spies rode hastily and told him and his kindred, who lay hidden in a wood hard by; and suddenly, with twenty knights, he rushed into the midst of all the throng to rescue her.