Andrea del Sarto

Andrea del Sarto was a Florentine painter whose career flourished during the High Renaissance and early Mannerism. He was admired as a fresco decorator, an altarpiece painter, a portraitist, a draughtsman and a colourist. In his lifetime he was highly regarded as an artist who worked 'without errors', though later fame favoured Leonardo, Michelangelo and Raphael.

Based on Wikipedia.