Born Ugo Boncompagni in 1502, he served as Pope from 1572 to 1585. Rare LS in Italian, to the Bishop of Lodi, signed “Greg. pp XIII,” March 13, 1580, one page, 8 x 10.75. Letter on a payment due by a recently deceased nobleman to the Apostolic Chamber, signed at the conclusion as Pope. In very good condition, with ink erosion to signature, intersecting folds, scattered toning, small tape remnant to reverse, and some light mirroring of text from another page previously placed upon the letter. Pope Gregorius is one of the best remembered popes of the Renaissance because during his reign he commissioned the Gregorian calendar which remains the internationally accepted civil calendar to this date. RR Auction COA.
