Siege of Mirandola
1502 CE.
Shown on the map at 44.889°, 11.066°.
The siege of Mirandola in 1502 was a military conflict involving Giovanni Francesco II Pico della Mirandola against his younger brothers Federico and Ludovico, who bombarded Mirandola for 50 days. Defeated and imprisoned, Francesco II was released only with the promise of cession of the dominions, then retiring into exile for eight years.
Text from the Wikipedia article Siege of Mirandola (1502), licensed CC BY-SA 4.0.