Title: The Harrowing of Gwynedd
Series: The Heirs of Saint Camber, Deryni Universe
Number in Series: 1 (one)
Authors: Katherine Kurtz
Cover Artist: Michael Herring
Interior Artist: Bob Porter
Language: English
Original Publisher: Del Rey
Originally Published: February 1989
Publisher: Del Rey
Published: October 1989
ISBN-10: 0345363140
ISBN-13: 9780345363145