Hildeprand fled to Rome before the Frankish host and did homage to Pope Hadrian I.
However, the dispute between Charlemagne and Hadrian as to who had the proper suzerainty over Spoleto was solved in the Franks' favour over the next few years.
In January 776, Hildeprandus gloriosus et summus dux ducatus Spoletani made a donation to the Abbey of Farfa dating it to the year of Charles' reign.
In 779, Hildeprand travelled to Virciniacum (today Verzenay[2]), probably near Compiègne, to profess fealty to Charlemagne.
In 788, Hildeprand joined Frankish and Lombard troops in resisting a Byzantine invasion.