Il Rosso was first (1531) employed to carry out the ideas of François I. as to painting, and then Sebastian Serlio was summoned from Bologna in 1541 to fill the place of "surintendant des bastiments et architecte de Fontainebleau." Il Rosso-Giovambattista had been a Florentine pupil of Michelangelo, but refused to follow any master, having, as Vasari says, "a certain inkling of his own." François I. was delighted with him at first, and made him head of all the Italian colony at Fontainebleau, where he was known as "Maitre Roux." But in two years the king was longing to patronize some other genius, and implored Giulio Romano, then engaged on the Palazzo del Té at Mantua, to come to him. The great master refused to come himself, but in his place sent the Bolognese Primaticcio, who became known in France as Le Primatice. The new-comer excited the furious jealousy of Il Rosso, whom he supplanted in favor and popularity, and who, after growing daily more morose, took poison in 1541. Then Primaticcio, who, to humor his rival had been sent into honorable exile (on plea of collecting antiquities at Rome), was summoned back, and destroyed most of Il Rosso's frescoes, replacing them by his own. Those that remain are now painted over, and no works of Il Rosso are still in existence (unless in engravings) except some of his frescoes at Florence. With the Italian style of buildings and decorations, the Italian system of a Court adorned by ladies was first introduced here under François I., and soon became a necessity.... Under François I., his beautiful mistress, the Duchesse d'Étampes--"la plus belle des savantes, et la plus savante des belles," directed all the fêtes. In this she was succeeded, under Henry II., by Diane de Poitiers, whose monogram, interwoven with that of the king, appears in all the buildings of this time, and who is represented as a goddess (Diana) in the paintings of Primaticcio. Under François II., in 1560, by the advice of the queen-mother, an assembly of notables was summoned at Fontainebleau; and here, accompanied by her 150 beautiful maids of honor, Catherine de Medici received the embassy of the Catholic sovereigns sent to demand the execution of the articles of the Council of Trent, and calling for fresh persecution of the reformers. Much as his predecessors had accomplished, Henri IV. did more for the embellishment of Fontainebleau, where the monogram of his mistress, Gabrielle d'Estrées, is frequently seen mingled with that of his wife, Marie de Medici. All the Bourbon kings had a passion for hunting, for which Fontainebleau afforded especial facilities. It was at Fontainebleau that Louis XIII. was born, and that the Maréchal de Biron was arrested. Louis XIII. only lived here occasionally. In the early reign of Louis XIV., the palace was lent to Christina, of Sweden, who had abdicated her throne.