Overview
Berengar I (; ; – 7 April 924) was the king of Italy from 887. He was Holy Roman Emperor between 915 and his death in 924. He is usually known as Berengar of Friuli, since he ruled the March of Friuli from 874 until at least 890, but he had lost control of the region by 896.
Berengar rose to become one of the most influential laymen in the empire of Charles the Fat, and he was elected to replace Charles in Italy after the latter's deposition in November 887. His long reign of 36 years saw him opposed by no less than seven other claimants to the Italian throne. His reign is usually characterised as troubled because of the many competitors for the crown and because of the arrival of Magyar raiders in Western Europe. His death was followed by an imperial interregnum that lasted 38 years until Otto I was crowned emperor in 962.
Margrave of Friuli, 874–887
His family was called the Unruochings after his grandfather, Unruoch II. Berengar was a son of Eberhard of Friuli and Gisela, daughter of Louis the Pious and his second wife Judith. He was thus of Carolingian extraction on his mother's side. He was born probably at Cividale. Sometime during his margraviate, he married Bertilla, daughter of Suppo II, thus securing an alliance with the powerful Supponid family. She would later rule alongside him as a consors, a title specifically denoting her informal power and influence, as opposed to a mere coniunx, wife.
When his older brother Unruoch III died in 874, Berengar succeeded him in the March of Friuli. With this he obtained a key position in the Carolingian Empire, as the march bordered the Croats and other Slavs who were a constant threat to the Italian peninsula. He was a territorial magnate with lordship over several counties in northeastern Italy. He was an important channel for the men of Friuli to get access to the emperor and for the emperor to exercise authority in Friuli. He even had a large degree of influence on the church of Friuli. In 884–885, Berengar intervened with the emperor on behalf of Haimo, Bishop of Belluno.
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