Nancy Goldstone is the author of six previous books including Daughters of the Winter Queen: Four Remarkable Sisters, the Crown of Bohemia, and the Enduring Legacy of Mary, Queen of Scots; The Rival Queens: Catherine de' Medici, Her Daughter Marguerite de Valois, and the Betrayal that Ignited a Kingdom; The Maid and the Queen: The Secret History of Joan of Arc; Four Queens: The Provençal Sisters Who Ruled Europe; and The Lady Queen: The Notorious Reign of Joanna I, Queen of Naples, Jerusalem, and Sicily. She has also coauthored six books with her husband, Lawrence Goldstone. She lives in Del Mar, California.