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In page Pope Gregory VII:

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Gregory was born Hildebrand (Italian: Ildebrando) in the town of Sovana, in the County of Grosseto, now southern Tuscany, the son of a blacksmith.[1] As a youth, he was sent to study in Rome at the monastery of St. Mary on the Aventine, where his uncle was reportedly abbot of a monastery on the Aventine Hill.[2][3] Among his masters were the erudite Lawrence, archbishop of Amalfi, and Johannes Gratianus, the future Pope Gregory VI.[4] When the latter was deposed at the Council of Sutri in December of 1046, with approval of the Holy Roman Emperor Henry III and exiled to Germany, Hildebrand followed him to Cologne.[citation needed] According to some chroniclers, Hildebrand moved to Cluny after Gregory VI died in 1048; though his declaration to have become a monk at Cluny is disputed.[3]