So saying, he departed; but his words had little effect on King Mark's mind. No sooner had Percivale gone than he began new devices to gratify his hatred of his nephew. He sent word to Dinas, the seneschal, under oath, that he intended to go to the Pope and join the war against the infidel Saracens, which he looked upon as a nobler service than that of raising the people against their lawful king.
So earnest were his professions that Dinas believed him and dismissed his forces, but no sooner was this done than King Mark set aside his oath and had Tristram again privately seized and imprisoned.
This new outrage filled the whole realm with tumult and rebellious feeling. La Belle Isolde was at first thrown into the deepest grief, and then her heart swelled high with resolution to live no longer with the dastard who called her wife. Tristram at the same time privately sent her a letter, advising her to leave the court of her villanous lord, and offering to go with her to Arthur's realm, if she would have a vessel privately made ready.
The queen thereupon had an interview with Dinas and Sadok, and begged them to seize and imprison the king, since she was resolved to escape from his power.
Furious at the fox-like treachery of the king, these knights did as requested, for they formed a plot by which Mark was privately seized, and they imprisoned him secretly in a strong dungeon. At the same time Tristram was delivered, and soon sailed openly away from Cornwall with La Belle Isolde, gladly shaking the dust of that realm of treachery from his feet.
In due time the vessel touched shore in King Arthur's dominions, and gladly throbbed the heart of the long-unhappy queen as her feet touched that free and friendly soil. As for Tristram, never was lover fuller of joy, and life seemed to him to have just begun.
Not long had they landed when a knightly chance brought Lancelot into their company. Warm indeed was the greeting of those two noble companions, and glad the welcome which Lancelot gave Isolde to English soil.
"You have done well," he said, "to fly from that wolf's den. There is no noble knight in the world but hates King Mark and will honor you for leaving his palace of vile devices. Come with me, you shall be housed at my expense."
Then he rode with them to his own castle of Joyous Gard, a noble stronghold which he had won with his own hands. A royal castle it was, garnished and provided with a richness which no king or queen could surpass. Here Lancelot bade them use everything as their own, and charged all his people to love and honor them as they would himself.
"Joyous Gard is yours as long as you will honor it by making it your home," he said. "As for me, I can have no greater joy than to know that my castle is so nobly tenanted, and that Tristram of Lyonesse and Queen Isolde are my honored guests."