Masaccio Tommaso

Masaccio (December 21, 1401 – autumn 1428), born Tommaso di Ser Giovanni di Simone, was the first great painter of the Quattrocento period of the Italian Renaissance. According to Vasari, Masaccio was the best painter of his generation because of his skill at recreating lifelike figures and movements as well as a convincing sense of three-dimensionality.

Reference

http://en.wikipedia.org/wiki/Masaccio