 Ramba uchinyora ndima ino - Pashure penguva yake yokudzidza paSiena, Cervini akaenda kuRoma ari mukambani yenhume yakatumwa neFlorence kuzokorokotedza Papa mutsva pakusarudzwa kwake. Baba vake naPapa Clement VII vakanga vari shamwari dzomunhu oga, uye Marcello akaitwa Scrittore Apostolico. Akagadzirirwa kushanda pazvidzidzo zvomuchadenga nekarenda, chirongwa chaiva nechinangwa chokudzorera gore kuti riwirirane nemwaka. Muna 1527, akatiza kumusha pashure pokupamba Roma, asi pakupedzisira akadzoka ndokutorwa mumusha waKardinal Alessandro Farnese mukuru. Cervini akagadzwa kuva muprista muna 1535. 