The Mists of Avalon
Marion Zimmer Bradley
 Mists of Avalon is a generations-spanning retelling of the Arthurian legend, but bringing it back to its Brythonic roots (see Matter of Britain). Its protagonist is Morgaine, who witnesses the rise of Uther Pendragon to the throne of Camelot. As a child, she is taken to Avalon by High Priestess Viviane, her maternal aunt, to become a priestess of the Mother Goddess and witnesses the rising tension between the old Pagan and the new Christian religions. At one point, she is given in a fertility ritual to a young man she will later learn is Arthur, her half-brother. Unbeknownst to Arthur, Morgaine conceives a child, Gwydion, later called Mordred, as a result of the ritual. After Uther dies, his son Arthur claims the throne. Morgaine and Viviane give him the magic sword Excalibur, and with the combined force of Avalon and Camelot, Arthur drives the invasion of the Saxons away. But when his wife Gwenhwyfar fails to produce a child, she is convinced that it is a punishment of God: firstly for the presence of pagan elements (a stance which Morgaine deeply resents), and secondly, for her forbidden love for Arthur's finest knight Lancelet. She increasingly becomes a religious fanatic, and relationships between Avalon and Camelot (i.e. Morgaine and herself) become hostile. When the knights of the Round Table of Camelot leave to search for the Holy Grail, Mordred seeks to usurp the throne. In a climactic battle, Arthur's and Mordred's armies square off, and in the end Avalon and Arthur are magically removed from the circles of the world. It is Morgaine alone who lives to tell the tale of Camelot.