This is not a book on how to write historical fiction. It is a book on how not to write historical fiction. If you love history and you're hard at work writing your first historical novel, but you're wondering if your medieval Irishmen would live on potatoes, if your 17th-century pirate would use a revolver, or if your hero would be able to offer Marie-Antoinette a box of chocolate bonbons . . . (The answer to all these is "Absolutely not ") . . ...