In Perceforest, Sebille la Dame du Lac, whose castle was surrounded by a river on which lay so dense a fog that no one could see across the water, though not called so, was evidently a fay.  The fortnight that Alexander the Great and Floridas abode with her, to be cured of their wounds, seemed to them but as one night.  During that night, "la dame demoura enceinte du roy dung filz, dont de ce lignage yssit le roi Artus."
    In the same romance we are told that "en lysle de Zellande jadis fut demourante une faee qui estoit appellee Morgane."  This Morgane was very intimate with "ung esperit (named Zephir) qui repairoit es lieux acquatiques, mais jamais nestoit veu que de nuyt."  Zephir had been in the habit of repairing to Morgane la Faee from her youth up, "car elle estoit malicieuse et subtille et tousjours aviot moult desire a aucunement sçavoir des enchantemens et des conjurations."  He had committed to her charge the young Passelyon and his cousin Bennucq, to be brought up, and Passelyon was detected in an intrigue with the young Morgane, daughter of the fay.  The various adventures of this amorous youth form one of the most interesting portions of the romance. (Fairy Mythology, Keightley, 1905)