The monument to Pope Gregory XIII (1502-1585) was created by Camillo Rusconi
Monument to Pope Gregory XIII (1572-85) was designed by Camillo Rusconi in 1723 and located just west of the Chapel of the Blessed Sacrament on the right side of the right aisle. This pope is best known for promulgating the Gregorian calendar. The pope is flanked by allegorical statues of Religion, holding the tablets of the Law, and Magnificence. At the base is a dragon, part of the heraldic device of the Boncompagni family.