The Siege of Crema is a siege of the town of Crema, Lombardy by the Holy Roman Empire in 1159.
The Cremans try to defend their city from the German invaders, but they are eventually defeated by Frederick's men.
Frederick seizes Milan in 1162 shortly after he takes Crema.
These events start the wars of Guelphs and Ghibellines, leading to the formation of the Lombard League, a league of northern Italian communes allied against the emperor, supported by the Pope.
