Pope Clement X, born Emilio Bonaventura Altieri, was head of the Catholic Church and ruler of the Papal States from 29 April 1670 to his death, in July 1676. Elected pope at age 79, he has since been ranked as the oldest pope at the time of his election.

The Italian Archdiocese of Camerino-San Severino Marche is a Latin diocese of the Catholic Church seated in Camerino, a city in the Province of Macerata, in the central Italian Marche region, in the Apennines. It is a suffragan of the Archdiocese of Fermo.