[Giovanni Battista di Jacopo Rosso]
(b Florence, 8 March 1494; d ?Fontainebleau, 14 Nov 1540).
Italian painter and draughtsman, active also in France. He was a major Florentine Mannerist, whose art is both elegant and emotionally intense. He was influential in Rome, and in Paris and Fontainebleau became one of a group of Italian artists who were instrumental in pioneering a northern, more secular Mannerism.