She was married to Pelleas, king of the islands to the west of the Summer Country, where the River Brue meets the Severn Sea. Nimuë herself had been born a princess of the River Isles, and had known her husband since childhood. Their castle stood almost within sight of the Tor, and when Pelleas, who was one of Arthur's Companions, was with the King, Nimuë would take her place as Lady of the Lake maidens in the convent on Ynys Witrin, or else retire alone to Applegarth, the house that Merlin had built near Camelot, and which he had left to her, along with his title, and — men whispered — how much more. It was fabled that during the long illness that had weakened the old enchanter towards his seeming death, he had made over all his knowledge to his pupil Nimuë, implanting in her brain even his own childhood's memories. Mordred had heard the stories, and though with manhood and security he had grown more skeptical, he remembered the impression he had received in Luguvallium of the enchantress's power, so he approached Applegarth with something that might even have been called nervousness.