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Pietro Giannone (born May 7, 1676, Ischitella, Naples [Italy]—died March 17, 1748, Turin, Kingdom of Sardinia) was an Italian historian whose works opposed papal interference in Naples. Giannone graduated in law (Naples, 1698), became interested in the “New Learning,” and wrote the Istoria civile del regno di Napoli (1723; The Civil History of the Kingdom of Naples)—a polemical survey of Neapolitan history in which he espoused the side of the civil power in its conflicts...