"Unto Sir Lancelot, flower of all noble knights, I, Sir Gawaine, son of King Lot of Orkney, and sister's son unto the noble King Arthur, send greeting; and also these sad tidings, that on the tenth day of May I was smitten on the old wound which you gave me at Benwick, and thus through this wound have I come to my death. And I would have all the world know that I, Sir Gawaine, Knight of the Round Table, have met with death not through your ill-will, but from my own seeking; therefore I beseech you to come in all haste to this realm, to which you have heretofore done such honor. I earnestly pray you, Sir Lancelot, for all the love that ever was betwixt us, make no tarrying, but come over the sea in all haste, that thou mayest with thy noble knights rescue that royal king who made thee knight, for he is hard bested with a false traitor, my own half-brother, Sir Mordred, who has had himself crowned king, and would have wedded Queen Guenever had she not taken refuge in the Tower of London. We put him to flight on our landing, on the tenth day of May, but he still holds against us with a great host. Therefore, I pray you to come, for I am within two hours of my death; and I beg that you will visit my tomb, and pray some prayer, more or less, for my soul."
When Sir Gawaine had finished this letter he wept bitter tears of sorrow and remorse, and Arthur wept beside him till they both swooned, the one from grief, the other from pain. When they recovered, the king had the rites of the church administered to the dying knight, who then prayed him to send in haste for Lancelot, and to cherish him above all other knights, as his best friend and ally.
Afterwards, at the hour of noon, Gawaine yielded up his spirit. And the king had him interred in Dover castle, where men to this day may see his skull, with the wound thereon that Lancelot gave him in battle.
Word was now brought to King Arthur that Mordred had pitched a new camp on Barham Down. Thither in all haste he led his army, and there a second great battle was fought, with much loss on both sides. But at the end Arthur's party stood best, and Mordred fled, with all his host, to Canterbury.
This second victory changed the feeling of the country, and many people who had held aloof joined the king's army, saying that Mordred was a traitor and usurper. When the dead had been buried and the wounded cared for, Arthur marched with his host to the sea-shore, westward towards Salisbury. Here a challenge passed between him and Mordred, in which they agreed to meet on a down beside Salisbury, on the day after Trinity Sunday, and there fight out their quarrel.
Mordred now made haste to recruit his army, raising many men about London, for the people of that section of the country held largely with him, and particularly those who were friendly to Lancelot. When the time fixed came near, the two armies drew together and camped on Salisbury Down.
And so the days passed till came the night of Trinity Sunday, when the king dreamed a strange dream, for it seemed to him that he sat in a chair that was fastened to a wheel, and was covered with the richest cloth of gold that could be made. But far beneath him he beheld a hideous black pool, in which were all manner of serpents, and vile worms, foul and horrible. Suddenly the wheel seemed to turn, and he fell among the serpents, which seized upon his limbs.
Awakening in fright, he loudly cried, "Help!" and knights and squires came crowding in alarm into his chamber; but he was so amazed that he knew not where he was nor what he said.
Then he fell again into a half slumber, in which Gawaine seemed to come to him attended by a number of fair ladies.