Pieri, Stefano a Florentine painter, born in 1513, and a pupil of Battista Naldini. He passed much of lis life at Rome, where he was patronized by cardinal Alessandro Medici, by whom he was employed in the church oof S. Prassede, where he painted the Annunciation and some pictures of the apostles. He executed other works for the churches at Rome and Florence, in which latter city he assisted Vasari in the cupola of S. Maria del Fiore. Lanzi says one of his best works is the Sacrifice of Isaac, in the Palazzo Pitti. Another fine picture is the Assumption of the Virgin, in the church of S. Maria in Via. at Rome. His works are well designed, but Baglioni censures them as being dry and hard. He died at Rome in the year 1600.