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Dromo's Den
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[Up] [Dromo's Den] Gregory XIII Image Gregory XIII (1502-1585) Pope, (1572-1585). The Gregorian calendar, in use today, was developed in1582. The Chevalier Artaud de Montour, The Lives and Times of the Popes, Vol. V (New York: Catholic Publication Society of America, 1911) 124.
Image courtesy of Rothe Technologies, Inc.
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