Palma Vecchio Diana and Callisto, 1525, oil on canvas, Art H

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Palma Vecchio (1480 – July 1528), born Jacopo Palma or known as Jacopo Negretti, was an Italian painter of the Venetian school born at Serina Alta near Bergamo. He is called Palma Vecchio in English ("Old Palma" - in Italian Palma il Vecchio) to distinguish him from Palma Giovane, his great-nephew.

Reference
http://en.wikipedia.org/wiki/Palma_Vecchio