When word was brought to Lancelot du Lake that Mordred had usurped the throne of England, had besieged Guenever in the Tower of London, and had sought to prevent Arthur from landing at Dover, his soul was moved to wrath and sorrow. And still more was he moved by the letter of Sir Gawaine, with its pitiful self-reproach and earnest wistfulness.
"Is it a time for mourning?" said Sir Bors to Lancelot. "My counsel is that you cross at once to England, visit Gawaine's tomb, as he requests, and then revenge my lord Arthur and my lady Guenever on this base traitor, Mordred."
"It is well advised," said Lancelot. "To England we must go in all haste."
Then ships and galleys were made ready with the greatest despatch, for Lancelot and his host to pass over to England. And in good time he landed at Dover, having with him seven kings and a mighty host of men.
But when he asked the people of Dover the news of the country, his heart was filled with dismay to hear of the great battle on Salisbury Downs, where a hundred thousand men had died in a day, and of the death of Arthur the king.
"Alas!" said Lancelot, "this is the heaviest tidings that ever mortal ears heard. Would that I had been advised in good time. Nothing now remains to do. I have come too late. Fair sirs, I pray you to show me the tomb of Sir Gawaine."
Then they brought him into the castle of Dover, and showed him the tomb. Lancelot fell on his knees before it, and wept, and prayed heartily for the soul of him that lay within. And that night he made a funeral feast, to which all who came had flesh, fish, wine, and ale, and every man and woman was given twelve pence. With his own hand he dealt them money in a mourning gown; and ever he wept, and prayed for the soul of Sir Gawaine.
In the morning, all the priests and clerks of the country round gathered, at his request, and sang a requiem mass before the tomb. And Lancelot offered a hundred pounds, and each of the seven kings forty pounds, and a thousand knights offered one pound each, this going on from morning till night. And Lancelot lay two nights on the tomb in prayer and weeping.
On the third day he called about him the kings, dukes, earls, barons, and knights of his train, and said to them,—
"My fair lords, I thank you all for coming into this country with me; but we have come too late, and that I shall mourn while I live. But since it is so, I shall myself ride and seek my lady Queen Guenever, for men say that she has fled from London, and become a nun, and that she lives in deep penance, and in fasting, prayers, and almsgiving, and is sick almost unto death. Therefore, I pray you, await me here, and if I come not again within fifteen days, then take ship and return to your own country."