 On the right side , the first chapel was dedicated to the Virgin Mary . On its vault were paintings of four Doctors of the Church ( Ambrose , Jerome , Augustine and Gregory the Great ) , and its walls were adorned with frescoes by Cristoforo <unk> ( or Ambrogi ) . Several frescoes , depicting events in the Life of the Virgin attributed to a late @-@ mannerist Emilian artist , are on display at the Museo di Roma . The second chapel was dedicated to San Biagio , and housed a panel painting of the saint . This , the last chapel added to the church , was the original side door on the Borgo Vecchio . The third chapel was dedicated to the Nativity of Jesus . It was called " of the circumcision " because of a painting by Giovanni Battista Ricci ( nicknamed " il Novara " after his birthplace ) of the Circumcision of Jesus . It was also known as the " chapel of the stone " , since the stone over which Jesus had reportedly been presented at the temple in Jerusalem was kept here ; after the church 's demolition , the stone and that of the sacrifice of Isaac were moved to the nearby church of Santi Michele e Magno . Above its altar was an oil painting by a student of Ricci of the presentation of Jesus . A 16th @-@ century fresco depicting the Pietà as part of a choir of angels was on a bottom wall of the nave . 
