غريغوري الأول
The second chapel is dedicated to Pope Gregory I. The 19th-century altar is mainly built with African green marble and Carrara white marble, framing a polychrome stone marquetry; The stonework was performed by the Corbarelli family. The altarpiece is an 18th-century oil on canvas depicting "Pope Gregory I invokes the aid of the Virgin to end the plague in Rome" by Sebastiano Ricci. Ricci's work replaced an initial painting by Carlo Cignani.