"Piero di Cosimo, also known as Piero di Lorenzo, was an Italian painter. The son of a Florentine goldsmith, Piero was born in Florence and apprenticed under the artist Cosimo Rosseli, from whom he derived his popular name and whom he assisted in the painting of the Sistine Chapel in 1481." http://www.artexpertswebsite.com/pages/artists/cosimo.php