Then a great rage of battle awoke in Sir Launcelot's heart against those who pressed his beloved master, Sir Blyant, in that wise, wherefore he would have hastened to the aid of Sir Blyant, but could not because of the chains that bound him. Then, in his madness, and being driven furious at being thus bound, Sir Launcelot catched those strong steel chains in his hands and wrestled with them. And the chains bit deep into his flesh in his wrestlings so that he was sore wounded by the iron. But in spite of that Sir Launcelot put forth his entire strength, and even though the blood flowed from his arms and hands yet he snapped the chains that bound his arms. After that he catched up a great stone in his hands and he beat upon the chains that bound his legs and brake those also, and so he was free again.
Then Sir Launcelot leaped upon the window-ledge, and he leaped out of the window of the castle and into the moat below and he swam the moat and so came out upon the other side thereof.
Right there came Sir Blyant striving to defend himself against those who followed him, and at that time he was very nigh falling from his horse at every blow he received. This Sir Launcelot beheld and when he saw how those two knights ever smote Sir Blyant and how that Sir Blyant reeled in his saddle beneath those blows, he roared aloud in pity and in rage.
The madman doeth battle for Sir Blyant.
Therewith, thus roaring, he straightway rushed upon Sir Bertolet, who was nighest to him, and he leaped up and catched that knight about the body and dragged him down upon the pommel of his saddle with great force of strength, and Sir Launcelot catched the sword of Sir Bertolet and he wrestled with Sir Bertolet and so plucked the sword out of Sir Bertolet's hand.
Then Sir Bertolet cried out to Sir Breuce: "Help! Help! my brother! For this madman slayeth me."
Therewith Sir Breuce turned from Sir Blyant for to succor his brother, and upon that Sir Launcelot quitted Sir Bertolet and rushed at Sir Breuce. And Sir Launcelot gave Sir Breuce such a buffet upon the helm with the sword of Sir Bertolet that he smote Sir Breuce with that one blow clean over the crupper of his horse.
Then Sir Bertolet took his spear in hand and therewith rushed his horse upon Sir Launcelot with intent to pierce him through the body. But from that assault Sir Launcelot leaped nimbly aside. Thereupon he rushed in and catched the spear of Sir Bertolet in his hand; and he ran up the length of the spear, and reached forward, and smote Sir Bertolet such a blow that he cut through the epaulier of the shoulder and deep into the shoulder to the very bone thereof, so that the arm of Sir Bertolet was half cut away from the body at that blow. Then Sir Launcelot would have struck again only that Sir Bertolet let go his spear from his hand, shrieking aloud, and wheeled his horse to escape.
Now by that time Sir Breuce sans Pitie had got him to horse again wherefore, beholding that terrible blow and beholding how his brother Sir Bertolet fled away from that madman, he also drove spurs to flank and fled away with might and main.
So it was that Sir Launcelot, unarmed, save for the sword in his naked hand, defeated two strong and doughty knights and so saved his master's life.