To the right is the monument of Petronilla Paolina de' Massimi, of 1663. It features a sarcophagus in low relief in front of a stylized obelisk, and has two putti. One holds a plaque with a cameo portrait of the deceased, the other sits on a pile of symbolic clutter while holding a wreath. The coat-of-arms below has a pair of wings, which means that the possessor is dead.

(Translation of inscription here.)