Pope Sergius IV (970 – 12 May 1012) was Pope and the ruler of the Papal States from 31 July 1009 to his death in 1012.
He was born in Rome as Pietro Martino Buccaporci, which essentially translates as "Peter Pig's Snout." The date of his birth is unknown but is believed to be around 970.
Buccaporci was the son of a shoemaker also by the name of Pietro. Despite his family's poor background, he performed well after entering the Church and rose quickly through the ranks. In 1004, he became the Cardinal-Bishop of Albano after he became a cardinal.
He was elected pope after the abdication of Pope John XVIII in 1009, and adopted the name Sergius IV.
The power held by Sergius IV was small and often overshadowed by John Crescentius III, the ruler of the city of Rome at the time. Some historians have claimed that Sergius IV was essentially a puppet ruler for Crescentius III. Others, however, claimed that the Pope resisted his power, and there is some evidence that Sergius IV gave political backing to an anti-Crescentius, German faction in the city.
Sergius IV (died after 1036) was Duke of Naples from 1002 to 1036. He was one of the prime catalysts in the growth of Norman power in the Mezzogiorno in the first half of the eleventh century. He was nominally a Byzantine vassal, like his father, John IV, before him.
In 1024, he submitted to Pilgrim, Archbishop of Cologne, when the latter was besieging Capua on behalf of Emperor Henry II, though his own duchy was not threatened. By this he acquired a reputation for weakness in the eyes of Prince Pandulf IV of Capua, the Wolf of the Abruzzi, who had been defeated by Pilgrim. In 1026, Pandulf, returned from captivity, besieged his old capital, now ruled by Pandulf V, the count of Teano. Basil Boiannes, the Greek catapan of Italy, negotiated a surrender and gave Pandulf V safe conduct to Naples, where Sergius offered him asylum. By this, Sergius incurred Pandulf IV's enmity. In the next year (1027), after Sergius' ally Boiannes was recalled, Pandulf attacked Naples and quickly captured it, some say by treachery. Pandulf V fled to Rome and Sergius went into hiding.
Pope Sergius could refer to: