I highly recommed this book by Marion Zimmer Bradley. It is an account of King Arthur's reign, told from the perspective of his wife Gwenhwyfar (Guinevere), sister Morgaine, aunt Morgause, mother Ingraine and grandmother Vivian. Fantastic! The book starts with the story of Viviane fostering Ingraine and marrying her to Gorlois, the duke of Cornwall, then to Uther Pendragon (you might recognize some of these characters from Irina's Pendragon trilogy), by whom Gwydion is born (he later becomes Arthur). Later on there is Avalon, war, marriage, births, miscarriages, and broken promises. The book is one of the most fascinating I have ever read, I hope you enjoy it too!
remembercedric