So Sir Percivale departed from Sir Tristram, and rode straight unto King Mark, and told him how he had delivered Sir Tristram; and also he told the king that he had done himself great shame for to put Sir Tristram in prison, for he is now the knight of most renown in this world living.

And wit thou well the noblest knights of the world love Sir Tristram, and if he will make war upon you ye may not abide it.

That is truth, said King Mark, but I may not love Sir Tristram because he loveth my queen and my wife, La Beale Isoud.

Ah, fie for shame, said Sir Percivale, say ye never so more.

Are ye not uncle unto Sir Tristram, and he your nephew?
Ye should never think that so noble a knight as Sir Tristram is, that he would do himself so great a villainy to hold his uncle's wife; howbeit, said Sir Percivale, he may love your queen sinless, because she is called one of the fairest ladies of the world.
Then Sir Percivale departed from King Mark.