The March of Friuli was a Carolingian frontier march against the Slavs and Avars, established in 776. It was a successor to the Lombard Duchy of Friuli. After Charlemagne had conquered the Italian Kingdom of the Lombards under King Desiderius at the Siege of Pavia in 774, he at first allowed the Lombard duke Hrodgaud to continue ruling in Friuli. According to the Royal Frankish Annals, Hrodgaud two years later revolted declaring himself a King of the Lombards, whereafter Charlemagne came rushing into Italy where he routed the duke's forces and had him deposed and killed. The autonomous Lombard duchy was dissolved and incorporated into Francia, though Hrodgaud's successors appointed by Charlemagne continued to bear the title of a dux Foroiuliensis. To the former Lombard duchy he added Panno