Golden Ambrosian Republic

The Golden Ambrosian Republic was a short-lived city-state centred on Milan, created in 1447 after the death of Duke Filippo Maria Visconti without a male heir. The succession crisis drew claimants from Aragon, Orleans, the Habsburgs and the condottiero Francesco Sforza. On 14 August 1447, the day after the duke's death, jurists, merchants and artisans proclaimed a republic, invoking the memory of Milan's medieval commune and the prestige of Saint Ambrose. Its government was dominated by the College of Jurisprudence and a council of captains, but it faced war on several fronts. The republic resisted France at Bosco Marengo, Venice at Caravaggio and Swiss forces at Castione, yet its finances and alliances weakened. In 1450 Francesco Sforza, who had been its commander, besieged and took Milan, abolished the republic and had himself recognised as duke. The experiment lasted less than three years but became a symbol of civic liberty in Lombardy.