Lady of Avalon (Avalon Series #3)

Journey to a time before King Arthur in this prequel to The Mists of Avalon—a spellbinding story of three remarkable women who alter the fortunes of Roman Britain as they fight to reclaim the magic and traditions of a once glorious past.
 
Caillean, the young priestess fated to become Lady of Avalon, who rescues and raises the orphaned Gawen—heir to a mystic and dangerous royal line...Dierna, who must use all her strength, wisdom, and love to guide Avalon through treache…