San Silvestro in Capite
Pope Pius IV made him a cardinal priest in the consistory of March 12, 1565. He participated in the papal conclave of 1565-66 that elected Pope Pius V. He received the red hat and the titular church of San Silvestro in Capite on February 8, 1566. Together with Cardinals Giovanni Ricci, Giovanni Francesco Commendone, and Alessandro Sforza, was named by Pope Pius V inspector of rivers, ports and public roads of Rome. He was a participant in the papal conclave of 1572 that elected Pope Gregory XIII. On June 2, 1572, he opted for the titular church of San Marcello al Corso.