A marvelous fictionalized portrait of Eleanor of Aquitaine who was queen of France and England successively, traveler to Constantinople, wife of a future saint, mother of Richard the Lionheart and for 15 years a prisoner of the English Crown. E.L. Konigsburg's irreverent, feminist, educational young-adult novel begins on a cloud in heaven, where Eleanor is awaiting the induction into heaven of her husband Henry II of England, who has spent the last 800 years in -- well -- not in heaven, at any rate. The rest of the book is a flashback.  (GBR245, $5.99)