The siege finished, Pope Clement commanded Messer Ottaviano de' Medici that he should cause the hall of Poggio a Caiano to be finished. Whereupon, Franciabigio and Andrea del Sarto being dead, the whole charge of this was given to Pontormo, who, after having the staging and the screens made, began to execute the cartoons; but, for the reason that he went off into fantasies and cogitations, beyond that he never set a hand to the work. This, perchance, would not have happened if Bronzino had been in those parts, who was then working at the Imperiale, a place belonging to the Duke of Urbino, near Pesaro; which Bronzino, although he was sent for every day by Jacopo, nevertheless was not able to depart at his own pleasure, for the reason that, after he had executed a very beautiful naked Cupid on the spandrel of a vault in the Imperiale, and the cartoons for the others, Prince Guidobaldo, having recognized the young man's genius, ordained that his own portrait should be taken by him, and, seeing that he wished to be portrayed in some armour that he was expecting from Lombardy, Bronzino was forced to stay with that Prince longer than he could have wished. During that time he painted the case of a harpsichord, which much pleased the Prince, and finally Bronzino executed his portrait, which was very beautiful, and the Prince was well satisfied with it. Jacopo, then, wrote so many times, and employed so many means, that in the end he brought Bronzino back; but for all that the man could never be induced to do any other part of this work than the cartoons, although he was urged to it by the Magnificent Ottaviano and by Duke Alessandro. In one of these cartoons, which are now for the most part in the house of Lodovico Capponi, is a Hercules who is crushing Antaeus, in another a Venus and Adonis, and in yet another drawing a scene of nude figures playing football.