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Duchy of Milan

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The Duchy of Milan was a powerful state located in Northern Italy. It was officially established on May 11, 1395. Gian Galeazzo Visconti created the duchy through a diploma signed in Prague. This document was signed by Wenceslaus of Bohemia. The Visconti family had already been ruling the city since 1277. This new title turned Milan into one of the five major states on the Italian peninsula.

Visconti XIV century
Visconti XIV century

The duchy was a large and important territory during the Renaissance.

At its height, the duchy included twenty-six towns and vast rural lands. These lands sat in the middle Padan Plain. The territory stretched from the hills of Montferrat to the middle of the plain. At its largest point, it covered almost all of modern Lombardy. It also reached into parts of Piedmont, Veneto, Tuscany, and Emilia-Romagna. The duchy was surrounded by several other strong powers. Savoy sat to the west, while the Republic of Venice was to the east. The Swiss Confederacy was to the north. To the south, the Republic of Genoa blocked access to the Mediterranean Sea.

The Visconti family spent nearly a century expanding their power. This process began with Ottone Visconti, who became archbishop in 1262. He defeated the Della Torre family at the Battle of Desio in 1277. Later, leaders like Azzone, Luchino, and Giovanni Visconti conquered many new areas. For example, Azzone took Ossola in 1331 and Bergamo in 1332. The brothers Luchino and Giovanni added Bellinzona in 1342 and Parma in 1346. Bernabò Visconti conquered Reggio Emilia in 1371. Finally, Gian Galeazzo unified these scattered domains. He was very wealthy and earned 1,200,000 gold florins in ordinary income alone. He also received 800,000 in extraordinary subsidies in a single year.

When the last Visconti duke, Filippo Maria, died in 1447, the duchy changed. There was no male heir to take his place. The people of Milan declared the Golden Ambrosian Republic. This republic faced many attacks from its neighbors. In 1450, a mercenary captain named Francesco Sforza conquered the city. He had married Bianca Maria, the illegitimate daughter of Filippo Maria. Sforza founded the House of Sforza and restored the duchy.

FrancescoIISforza
FrancescoIISforza

Under the Sforza family, Milan became incredibly wealthy. They introduced a major silk industry that helped the state prosper during the Renaissance.

Control of Milan became a source of constant conflict between major European powers. In the late 15th century, the Habsburg Monarchy and the Kingdom of France fought for influence. One major event was the invasion by King Louis XII of France in 1499. He claimed the throne because his ancestor had married Valentina Visconti. Louis XII drove out the ruler Ludovico il Moro.

Italy in 1499
Italy in 1499

This period of fighting is often called the Italian Wars. The French held the territory for a time, but the Swiss army expelled them in 1512. Control shifted back and forth between the French and the Sforza family for several years. The Battle of Marignano in 1515 was a key moment when the French re-established control.

The struggle for Milan continued through the 16th century. In 1521, Charles V, the King of Spain and Holy Roman Emperor, conquered the duchy. He placed Francesco II Sforza on the throne. However, the French attacked again and won a major victory at the Battle of Pavia in 1525.

LuzSchiCrev
LuzSchiCrev

Eventually, the Treaty of Cambrai saw France officially abandon its claims to the area. From 1556, the duchy was ruled by Habsburg Spain. In 1707, during the War of the Spanish Succession, it passed to Habsburg Austria. The duchy remained under Austrian control for many years.

The end of the duchy came during the era of Napoleon Bonaparte. In 1796, a French army captured the territory during the War of the First Coalition. The duchy officially ceased to exist in 1797. This happened because of the Treaty of Campo Formio, which gave the land to the Cisalpine Republic.

Bellinzona Tschachtlan
Bellinzona Tschachtlan

After Napoleon was defeated, the Congress of Vienna met in 1815. The Congress restored many Italian states, but it did not restore the Duchy of Milan. Instead, the land became part of the Kingdom of Lombardy–Venetia under the Austrian Emperor.

Finally, in 1859, the territory was ceded to Piedmont-Sardinia. By 1861, it became part of the new Kingdom of Italy.

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🖼️ Images & Media (7)
File:Italy in 1499.png
Italy in 1499.png
File:Visconti XIV century.svg
Visconti XIV century.svg
File:Bellinzona Tschachtlan.jpg
Bellinzona Tschachtlan.jpg
File:BartholomaeusColleoni1566-69.png
BartholomaeusColleoni1566-69.png
Map of Lombardy after the Peace of Lodi...
File:LuzSchiCrev.jpg
LuzSchiCrev.jpg
File:FrancescoIISforza.jpg
FrancescoIISforza.jpg
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