Santa Maria del Popolo
The architect or architects of this innovative project remain unknown due to a lack of contemporary sources. Giorgio Vasari in his "Lives" attributed all the important papal projects in Rome during Sixtus IV to a Florentine, Baccio Pontelli including the basilica and monastery of Santa Maria del Popolo. Modern researchers deemed this claim highly dubious and proposed other names among them Andrea Bregno, a Lombard sculptor and architect whose workshop certainly received important commissions in the basilica. The fundamental differences between the façade and the interior suggest that maybe more than one architect was working on the building.
Mellini Chapel (Santa Maria del Popolo)
The very long funerary inscription mentions fact the Cardinal Savio has served as papal nuncio in Spain for ten years, and later he was the cardinal priest of the Basilica of Santa Maria del Popolo. According to the inscription his tomb was erected in 1699 (i. e. during his lifetime). A will dated to 9 September 1698 states that the statues of the tomb had been completed but the monument was still unfinished at the time. The cardinal planned his own tomb and apparently lived to see it erected because he died in 1701.