One of the most significant popes of the 8th century, Adrian I worked closely with Charlemagne to solidify the Carolingian empire and the authority of the papacy. He also played a crucial role in the conflict with the Lombards and the defense of Rome. Nationality: Papal States Born: January 1, 0700 Died: December 29, 0795 Pontificate: February 9, 0772 – December 29, 0795