Airsid

Very little is known of this ancient Deryni brotherhood. According to the Legends, the Airsid constructed the complex used by the Camberian Council, "hidden beneath a high, rock-girt plateau of the Rhendall Mountains almost within sight of the sea.  They claimed credit for the keeill itself, and apparently had at least started work on the chamber which now housed the Council, but they had disappeared before it could be finished-no one knew why." [Camber the Heretic; The Harrowing of Gwynedd].