(called Rosso Fiorentino) (1494-1540) Italian painter. He studied under Andrea del Sarto and worked in Florence 1513–23. His dramatic style, like that of his friend Pontormo, exemplifies early Italian Mannerism. In 1530 he was invited to France by François I and worked at Fontainebleau with Primaticcio. Together they founded the Fontainebleau School style, a Mannerist fusion of French and Italian taste.