Characterization is a crucial element of fiction. Novelists must know the people they write about, or they may behave in ways contradictory to their personality. Historians don’t generally try to get inside a subject’s head, while a novelist thrives in invading others’ privacy. A novelist makes personality and motivations central to the story. Before I write the first word of a historical novel, I read several biographies of the major characters to get a perspective on their distinctiveness. I read positive and negative perspectives to get a grasp of who these people were. Where do you find these personal descriptions of historical figures? First, I go to history books. Historians do not normally try to portray their subject’s thoughts and feelings, but they don’t ignore personality. Good ones dutifully quote contemporary descriptions of the subject to satisfy documentation requirements. The second place I go to is to the historical figures’ own writing. A person’s writing always ...