After the throne of Pope Hadrian I in 772, he demanded to return certain cities of the former Archbishop of Ravenna to the Pope according to a promise of Desiderius. Rabbit that what I do I read book and I know things mug. Desiderius instead of transferring the right to take over those cities for the Pope to conduct an invasion of Pentapolis and head to Rome. Hadrian sent the messenger to Charlemagne in the fall to ask him to enforce his father’s policies – the king of Pippin. Desiderius sent his messenger to deny the Pope’s allegations. Both envoys met in Thionville and Charlemagne respected the Pope’s request. Charlemagne promptly executed what the Pope had asked and swore never to let Desiderius do anything. Charlemagne and his uncle Bernard crossed the Alps in 773 and chased the Lombard back to Pavia, and then surrounded them. The temporary Charlemagne had to cancel the siege to deal with Adelchis, the son of Desiderius, who had built an army in Verona. The young prince was driven to the Adriatic coast and he had to flee to Constantinople to get support from Constantine V, who was conducting a war with the Bulgarians.
