Caterina Sforza, Countess of Forlì (early 1463 – 28 May 1509) was an Italian noblewoman, the illegitimate daughter of Galeazzo Maria Sforza, Duke of Milan and Lucrezia Landriani, the wife of the courtier Gian Piero Landriani, a close friend of the Duke. Raised in the refined Milanese court, Caterina later held the titles of Lady of Imola and Countess of Forlì, by her marriage to Girolamo Riario. She was also the Regent for her first-born son, Ottaviano.The descendant of a dynasty of noted condottieri, Caterina, from an early age, distinguished herself by her bold and impetuous actions taken to safeguard her possessions from possible usurpers,...