long since vanished in favor of the Gothic kings of Italy, during the 540s Italy was gradually retaken from the Goths by Justinian I, emperor of the Eastern Roman Empire ruling from Constantinople. As the fighting was mainly in the north, the young Gregory probably saw little of it. Totila sacked and vacated Rome in 546, destroying most of its population, but in 549 he invited those who were still alive to return to the empty and ruined streets. It has been hypothesized that young Gregory and his parents retired during that intermission to their Sicilian estates, to return in 549. The war was over in Rome by 552, and a subsequent invasion of the Franks was defeated in 554. After that, there was peace in Italy, and the appearance of restoration, except that the central government now resided in Constantinople. Like most young men of his position in Roman society, Gregory was well educated, learning grammar, rhetoric, the sciences, literature, and law; he excelled in all these fields. Gregory of Tours reported that "in grammar, dialectic and rhetoric ... he was second to none...." He wrote correct Latin but did not read or write Greek. He knew Latin authors, natural science, history, mathematics and music and had such a "fluency with imperial law" that he may have trained in it "as a preparation for a career in public life". Indeed, he became a government official, advancing quickly in rank to become, like his father, Prefect of Rome, the highest civil office in the city, when only thirty-three years old. The monks of the Monastery of St. Andrew, established by Gregory at the ancestral home on the Caelian, had a portrait of him made after his death, which John the Deacon also saw in the 9th century. He reports the picture of a man who was "rather bald" and had a "tawny" beard like his father's and a face that was intermediate in shape between his mother's and father's. The hair that he had on the sides was long and carefully curled. His nose was "thin and straight" and "slightly aquiline". "His forehead was high." He had thick, "subdivided" lips and a chin "of a comely prominence" and "beautiful hands". In the modern era, Gregory is often depicted as a man at the border, poised between the Roman and Germanic worlds, between East and West, and above all, perhaps, between