Archbasilica of St. John Lateran
During the Jubilee of 1575, he opened the holy door of the Archbasilica of St. John Lateran. He was the Camerlengo of the Sacred College of Cardinals from 8 January 1579 to 8 January 1580. On 5 December 1580 he opted for the titular church of San Pietro in Vincoli. He was named papal legate in Marche on 25 October 1581.