Lombard League formed at Pontida

April 7, 1167

Sixteen northern Italian cities, led by Milan, swore at a Benedictine monastery near Bergamo to unite against Barbarossa. Within months they were rebuilding Milan's walls in defiance of imperial decree. The league would become the model for later Italian civic coalitions. The oath at Pontida bound the cities to mutual defense with a penalty of economic embargo against any member that broke ranks, creating a surprisingly effective military alliance.