贝内文托公国
After the collapse of the Western Roman Empire, the Western half of the Empire became fully controlled by Germanic tribes until Justinian's Byzantine re-conquest, which included the province of Samnium, of which Histonium was a key town. However soon after Justinian's death, Histonium fell to the Lombards becoming incorporated into the Duchy of Benevento and, later, succumbing to the Franks c774AD. Normans under Robert Guiscard in turn captured the Duchy of Benevento in 1053. Around 1076, Histonium was renamed Guastaymonis, or the Waste of Aimone (), following raids, hence its current name. From the 13th century it was part of the Kingdom of Naples, which later merged into the Kingdom of the Two Sicilies.