The Siege of Pavia (773–774) was a pivotal event in the Carolingian conquest of the Kingdom of the Lombards. It marked the culmination of Charlemagne's campaign to subdue the Lombards and claim their territories.
In 773, Charlemagne, King of the Franks, led his army into Italy after the Lombard King Desiderius refused to cede lands promised to the papacy as part of a previous agreement. Charlemagne's forces successfully crossed the Alps and engaged the Lombard army. While some Lombard forces were defeated, Desiderius retreated to Pavia, the Lombard capital, to withstand a siege.
Charlemagne besieged Pavia in the autumn of 773. The siege lasted for several months, throughout the winter of 773 and into the spring of 774. While the siege of Pavia continued, Charlemagne also dispatched forces to besiege Verona, where Desiderius' son, Adalgis, held out.
Despite the Lombard defenses, Pavia eventually fell to Charlemagne in June 774. Desiderius surrendered to Charlemagne, bringing an end to Lombard rule in northern Italy. Charlemagne subsequently declared himself King of the Lombards, solidifying his control over the region.
The Siege of Pavia was strategically important for several reasons. It effectively ended Lombard independence and brought their territories under Carolingian control. It significantly expanded Charlemagne's realm and influence in Europe. It also established a strong alliance between the Carolingian dynasty and the papacy, which would have long-lasting consequences for the political and religious landscape of medieval Europe. Desiderius was taken as a prisoner to Francia, where he died several years later. Adalgis fled to Constantinople and sought aid to regain his kingdom, but never succeeded.