Oberto conte di Padova, I

From http://www.rpi.edu/~holmes/Hobbies/Genealogy/ps07/ps07_356.htm

Marquis of eastern Liguria and count of Luni, powerful feudal lord of 10th-century Italy under King Berengar II and the Holy Roman emperor Otto I. His descendants, the Obertinghi, founded several famous Italian feudal clans.

Oberto was of a family that apparently arrived in Italy in the 9th century with Charlemagne, perhaps from Bavaria. Oberto acquired Genoa and Luni (east of Genoa) in 951, when Berengar seized Liguria and gave the eastern section to Oberto. Nine years later Oberto, dissatisfied with Berengar's rule, went to Germany with the bishop of Como and the archbishop of Milan to ask Otto to intervene in Italy. After Otto's conquest and coronation as Holy Roman emperor (962), he made Oberto count palatine, second only to himself in Italy. Four great families, the Este, Malaspina, Pallavicini, and Massa Parodi, are believed to have descended from Oberto's sons.

References: [PlantagenetA]

From http://www.treccani.it/enciclopedia/oberto-i_(Dizionario-Biografico)/

The OBERTO . - Founder of the Obertenghi, it is attested starting from 13 April 945, when he was present, with the title of count, in a placito held in the royal palace of Pavia ( I Placiti del “Regnum italiae” , 1955-60, I, p. 551) .
The three attestations, the first ever by Oberto, of whose ancestors there is no news, testify to the rapid rise of a character who, presumably of a not so high social level, reached the highest levels of the kingdom.
Count in 945, Oberto became first marquis (in 951), then count of the sacred palace (in 953), or maximum royal officer, with responsibilities that extended to the entire territory of the kingdom.