Monuments in the Basilica of Santa Maria del Popolo
The long time gap is explained by the fact that the cardinal was buried in the Old St. Peter's Basilica together with his uncle and benefactor, Cardinal Antonio Pallavicini Gentili (Antoniotto). In 1596 their bodies were relocated to the cemetery Santa Maria del Popolo where Antoniotto's monument was set up and later transferred to the Montemirabile Chapel. Philipp Zitzlsperger calls this a particularly instructive example of the separation of the body and the tomb which increasingly came to be the norm in Rome from the second half of the 16th century because the location of the cardinal's corpse has not been established but the transferral of the remains was reason enough to the relatives to erect a cenotaph in the church itself.
Santa Maria del Popolo
The urban setting of the basilica changed fundamentally between 1816 and 1824 when Giuseppe Valadier created the monumental Neo-Classical ensemble of Piazza del Popolo, commissioned by Pope Pius VII. The ancient monastery of the Augustinians was demolished, the extensive gardens were appropriated and a new monastery was erected on a much smaller footprint in Neo-Classical style. This building covered the whole right side of the basilica with its side chapels, wrapping around the base of the bell tower and reducing the visual prominence of the basilica on the square.