But as soon as the man had passed through, a portcullis dropped behind him. Then the others were much dismayed to see themselves shut in, and they think they must be bewitched. But he, of whom I have more to tell, wore upon his finger a ring, whose stone was of such virtue that any one who gazed at it was freed from the power of enchantment. Holding the ring before his eyes, he gazed at it, and said: "Lady, lady, so help me God, now I have great need of your succour!"xvi This lady was a fairy, who had given it to him, and who had cared for him in his infancy. And he had great confidence that, wherever he might be, she would aid and succour him. But after appealing to her and gazing upon the ring, he realises that there is no enchantment here, but that they are actually shut in and confined.

Lancelot, the Knight of the Cart