'Aistulf' (749 - d.
756) was the
duke of Friuli from
744, king of
Lombards from
749, and
duke of Spoleto from
751. His father was the
Duke Pemmo.
After his brother
Ratchis became king, Aistulf succeeded him in Friuli. He succeeded him later as king when Ratchis abdicated to a monastery. Aistulf continued the policy of expansion and raids against the
papacy and the
Byzantine exarchate of Ravenna. In 751, he captured
Ravenna itself and even threatened
Rome, claiming a
capitation tax.
The popes, thoroughly irritated and alarmed, and hopeless of aid from the Byzantine Emperor, turned to the
Carolingian mayors of the palace of
Austrasia, the effective rulers of the
Frankish kingdom. In
741,
Pope Gregory III asked
Charles Martel to intervene, but he was too busy elsewhere and declined. In
753,
Pope Stephen II visited Charles Martel's son
Pippin the Short, who had been proclaimed king of the Franks in 751 with the consent of
Pope Zachary. In gratitude for the papal consent to his coronation, Pippin crossed the
Alps, defeated Aistulf, and gave to the pope the lands which Aistulf had torn from the ''ducatus Romanus'' and the exarchate (
Emilia-Romagna and the
Pentapolis).
Aistulf died hunting in 756. He was succeeded by
Desiderius as king of the Lombards and by
Alboin as duke of Spoleto. He had given Friuli to his brother-in-law
Anselm, abbot of
Nonantula, whose sister Gisaltruda he had married, when he succeeded to the kingship in 749.
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