How King Mark let do counterfeit letters from the Pope, and how Sir Percivale delivered Sir Tristram out of prison.
Now turn we unto King Mark, that when he was escaped from Sir Sadok he rode unto the Castle of Tintagil, and there he made great cry and noise, and cried unto harness all that might bear arms. Then they sought and found where were dead four cousins of King Mark’s, and the traitor of Magouns. Then the king let inter them in a chapel. Then the king let cry in all the country that held of him, to go unto arms, for he understood to the war he must needs. When King Mark heard and understood how Sir Sadok and Sir Dinas were arisen in the country of Liones he remembered of wiles and treason. Lo thus he did: he let make and counterfeit letters from the Pope, and did make a strange clerk to bear them unto King Mark; the which letters specified that King Mark should make him ready, upon pain of cursing, with his host to come to the Pope, to help to go to Jerusalem, for to make war upon the Saracens.