'Adelard', 'Adalhard', or 'Adalard' was briefly the
Duke of Spoleto from March to August
824. Before Spoleto, he was the count of the palace. He was appointed to succeed
Suppo I, but he died in five months and was replaced by Suppo's son
Mauring.
Sources
★ Wickham, Chris. ''Early Medieval Italy: Central Power and Local Society 400-1000''. MacMillan Press: 1981.