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Giacomo Boncompagni, I. duca di Sora (1548 - 1612)

Pope Gregory XIII (1501 - 1585)

Pope Gregory XIII (7 January 1502 – 10 April 1585), born Ugo Boncompagni, was Pope of the Roman Catholic Church from 1572 to 1585. He is best known for commissioning and being the namesake for t...