Who is the historical fiction author of a book about Richard the Lionhearted?
I believe the author you are looking for is Alison Weir who is a British writer of historical books, and wrote ‘Eleanor of Aquitaine, A Life’ (she who was Richard the Lionhearted mother!), Henry VIII: The King and His Court, and several other historical novels about British monarchy. Here’s her official site, perhaps you can find the book you are looking for: http://www.alisonweir.org.