Tommaso Guidi, better known as Masaccio, (1401 - 1428), was a famous painter of the Italian Renaissance. He worked in Florence. Masaccio was a nickname that meant Fat Untidy Tom. He lived a very short life and only a few of his paintings exist, but they were so different to the style of other artists around him that they helped other painters to see things in a new way.

The San Giovenale Altarpiece.