The church is named after an icon of the Virgin Mary which was placed on this site to console criminals who were tossed down off the cliff above the church, thought to be the Tarpeian Rock from where condemned Roman criminals were tossed to their death in Roman times. In 1385 a condemned nobleman, Giordanello degli Alberini, paid 2 gold florins for the icon to provide consolation for criminals facing death. WIKIPEDIA