And where Sir Lamorak alighted he tied his horse to a privy postern, and so he went into a parlour and unarmed him; and then he went unto the queen's bed, and she made of him passing great joy, and he of her again, for either loved other passing sore.

So when the knight, Sir Gaheris, saw his time, he came to their bedside all armed, with his sword naked, and suddenly gat his mother by the hair and struck off her head.
When Sir Lamorak saw the blood dash upon him all hot, the which he loved passing well, wit you well he was sore abashed and dismayed of that dolorous knight.

And therewithal, Sir Lamorak leapt out of the bed in his shirt as a knight dismayed, saying thus: Ah, Sir Gaheris, knight of the Table Round, foul and evil have ye done, and to you great shame.
Alas, why have ye slain your mother that bare you?
with more right ye should have slain me.

The offence hast thou done, said Gaheris, notwithstanding a man is born to offer his service; but yet shouldst thou beware with whom thou meddlest, for thou hast put me and my brethren to a shame, and thy father slew our father; and thou to lie by our mother is too much shame for us to suffer.

And as for thy father, King Pellinore my brother Sir Gawaine and I slew him.