San Silvestro in Capite
He was Consultor of the Congregation of Rites and of Propaganda, and governor of the conclave that chose the successor of Alexander VII; under Clement IX he was made assessor of the Holy Office (Congregation of the Inquisition). He was appointed secretary of the Congregation of Bishops and Regulars by Clement X, and 13 June 1673, was named Cardinal-Deacon of the Title of Santa Maria in Porticu, and later (1686) Cardinal-Priest of the Title of San Silvestro in Capite. In 1693 Innocent XII bestowed on him the office of Librarian of the Vatican ("Bibliotecario di Santa Romana Chiesa").