glossary of proper names the king to release him in the hope that Ascanio would support his, Rouen’s, candidature for the papacy. sforza, caterina See forlí, countess of. sforza, francesco (1401–66) The most successful mercenary commander of his century, Francesco frequently fought for Filippo Visconti, Duke of Milan (1412–47). Visconti had no sons and only one daughter, Bianca Maria, whom he offered in marriage to Sforza to keep the powerful commander on Milan’s side, frequently delaying the wedding so as to retain his bar- gaining power. Having eventually married Bianca Maria in 1441, Sforza expected to become duke on Visconti’s death in 1447, but the people of Milan declared a republic. Sforza at first served the republic in a war against Venice, but then betrayed it and took Milan for himself, becoming duke in 1450. sforza, giacomo Giacomo (Muzio) Attendolo (1369–1424). Father of Francesco Sforza, who would become Duke of Milan. Joined the mercenary army of Alberigo da Barbiano in the 1380s and received the nickname Sforza for his strength and determin- ation. Sforza served as mercenary commander for many Italian leaders and frequently found himself opposed to Braccio da Montone, who had also started his mercenary career under Alberigo da Barbiano. He was eventually killed in the service of Joanna of Naples. sforza, ludovico (1452–1508) Second son of Francesco Sforza, and Duke of Milan (1494–1500). When Ludovico’s older brother and duke, Galeazzo Maria, was assassinated in 1476, power officially passed to his seven-year-old son Gian Galeazzo, but Ludovico seized control of the state and eventually became duke when Gian Galeazzo died in 1494. Since Naples favoured Gian Galeazzo’s attempt to regain his title, Ludovico supported the claim of Charles VIII to the Neapolitan throne and encouraged his invasion of Italy in 1494. However, the extent of French successes led him to join the League of Venice, an anti-French alliance, which pushed Charles out of Italy. In 1499, Ludovico lost Milan to Charles’s successor, Louis XII. He managed to recover the city briefly in 1500 but was then defeated and imprisoned by the French until his death in 1508. He is chiefly remembered for his patronage of Leonardo da Vinci.