The agreement between Charlemagne and Adrian remained undisturbed. In 787 Charlemagne further enlarged the States of the Church by new donations: Capua and a few other frontier cities of the Duchy of Benevento, besides several cities in Lombardy, Tuscany, Populonia, Roselle, Sovana, Toscanella, Viterbo, Bagnorea, Orvieto, Ferento, Orchia, Marta and lastly Città di Castello appear to have been added at that time. This is based upon deductions, since no document survives either from the time of Charlemagne or from that of Pepin. Adrian proved himself no mean politician, and is ranked with Stephen II as the second founder of the States of the Church. His agreement with Charlemagne remained authoritative for the relations of the later popes with the Carolingians and the German emperors. These relations were given a brilliant outward expression by Charlemagne's coronation as emperor in 800.