Treaty of Lodi Republic of VeniceMargravate of Mantua Francesco Sforza (1448–9)Bartolomeo Colleoni (1448–51, 53–54)Jacopo Piccinino (1450–4) The Milanese War of Succession[1][2] was a war of succession over the Duchy of Milan from the death of duke Filippo Maria Visconti on 13 August 1447 to the Treaty of Lodi on 9 April 1454.
Seeking to claim Milan for himself, the Duke of Savoy interfered in support of the Ambrosian Republic in 1449, but they were defeated by the Sforzan–Venetian forces under Bartolomeo Colleoni at the Battle of Borgomanero (22 April 1449).
But it was too late: Sforza conquered the city of Milan after a siege in early 1450, ended the Ambrosian Republic, and was recognised as duke by the senate with support of the population.
The latter sent René of Anjou (claimant to the Neapolitan throne, which he lost in 1442) with an expeditionary force to Italy around 1452 on the condition that Sforza would later aid him to regain Naples.
[2][6] The Milanese War of Succession ended with the Treaty of Lodi (9 April 1454), which recognised Sforza as the new duke of Milan (and established a balance of power in Italy, especially through the Italic League formed in August 1454).