Book XVIII - Chapter III - How at a dinner that the queen made there was a knight enpoisoned, which Sir Mador laid on the queen.
AND then the queen let make a privy dinner in London unto the knights of the Round Table. And all was for to show outward that she had as great joy in all other knights of the Table Round as she had in Sir Launcelot. All only at that dinner she had Sir Gawaine and his brethren, that is for to say Sir Agravaine, Sir Gaheris, Sir Gareth, and Sir Mordred. Also there was Sir Bors de Ganis, Sir Blamore de Ganis, Sir Bleoberis de Ganis, Sir Galihud, Sir Galihodin, Sir Ector de Maris, Sir Lionel, Sir Palomides, Safere his brother, Sir La Cote Male Taile, Sir Persant, Sir Ironside, Sir Brandiles, Sir Kay le Seneschal, Sir Mador de la Porte, Sir Patrise, a knight of Ireland, Aliduk, Sir Astamore, and Sir Pinel le Savage, the which was cousin to Sir Lamorak de Galis, the good knight that Sir Gawaine and his brethren slew by treason. And so these four-and-twenty knights should dine with the queen in a privy place by themself, and there was made a great feast of all manner of dainties.
But Sir Gawaine had a custom that he used daily at dinner and at supper, that he loved well all manner of fruit, and in especial apples and pears. And therefore whosomever dined or feasted Sir Gawaine would commonly purvey for good fruit for him, and so did the queen for to please Sir Gawaine; she let purvey for him all manner of fruit, for Sir Gawaine was a passing hot knight of nature. And this Pinel hated Sir Gawaine because of his kinsman Sir Lamorak de Galis; and therefore for pure envy and hate Sir Pinel enpoisoned certain apples for to enpoison Sir Gawaine. And so this was well unto the end of the meat; and so it befell by misfortune a good knight named Patrise, cousin unto Sir Mador de la Porte, to take a poisoned apple. And when he had eaten it he swelled so till he brast, and there Sir Patrise fell down suddenly dead among them.
Then every knight leapt from the board ashamed, and araged for wrath, nigh out of their wits. For they wist not what to say; considering Queen Guenever made the feast and dinner, they all had suspicion unto her. My lady, the queen, said Gawaine, wit ye well, madam, that this dinner was made for me, for all folks that know my condition understand that I love well fruit, and now I see well I had near been slain; therefore, madam, I dread me lest ye will be shamed. Then the queen stood still and was sore abashed, that she nist not what to say. This shall not so be ended, said Sir Mador de la Porte, for here have I lost a full noble knight of my blood; and therefore upon this shame and despite I will be revenged to the utterance. And there openly Sir Mador appealed the queen of the death of his cousin, Sir Patrise. Then stood they all still, that none would speak a word against him, for they all had great suspicion unto the queen because she let make that dinner. And the queen was so abashed that she could none other ways do, but wept so heartily that she fell in a swoon. With this noise and cry came to them King Arthur, and when he wist of that trouble he was a passing heavy man.