Then, in the year 1536, the Emperor Charles V coming to Italy and to Florence, as has been related in other places, the most magnificent festive preparations were ordained, among which Vasari, by order of Duke Alessandro, received the charge of the decorations of the Porta a S. Piero Gattolini, of the facade at S. Felice in Piazza, at the head of the Via Maggio, and of the pediment that was erected over the door of S. Maria del Fiore; and, in addition, of a standard of cloth for the castle, fifteen braccia in depth and forty in length, into the gilding of which there went fifty thousand leaves of gold. Now the Florentine painters and others who were employed in these preparations, thinking that Vasari was too much in favour with Duke Alessandro, and wishing to leave him disgraced in that part of the decorations--a part truly great and laborious--which had fallen to him, so went to work that he was not able to enlist the services of any master of architectural painting, whether young or old, among all those that were in the city, to assist him in any single thing. Of which having become aware, Vasari sent for Cristofano, Raffaello dal Colle, and Stefano Veltroni of Monte Sansovino, his kinsman; and with their assistance and that of other painters from Arezzo and other places, he executed the works mentioned above, in which Cristofano acquitted himself in such a manner, that he caused everyone to marvel, doing honour to himself and also to Vasari, who was much extolled for those works. After they were finished, Cristofano remained many days in Florence, assisting the same Vasari in the preparations that were made in the Palace of Messer Ottaviano de' Medici for the nuptials of Duke Alessandro; wherein, among other things, Cristofano executed the coat of arms of the Duchess Margherita of Austria, with the balls, upheld by a most beautiful eagle, with some boys, very well done. Not long afterwards, when Duke Alessandro had been assassinated, a compact was made in the Borgo to hand over one of the gates of the city to Piero Strozzi, when he came to Sestino, and letters were therefore written to Cristofano by some soldiers exiled from the Borgo, entreating him that he should consent to help them in this: which letters received, although Cristofano did not grant their request, yet, in order not to do a mischief to the soldiers, he chose rather to tear them up, as he did, than to lay them, as according to the laws and edicts he should have done, before Gherardo Gherardi, who was then Commissioner for the Lord Duke Cosimo in the Borgo. When the troubles were over and the matter became known, many citizens of the Borgo were exiled as rebels, and among them Doceno; and Signor Alessandro Vitelli, who knew the truth of this affair and could have helped him, did not do so, to the end that Cristofano might be as it were forced to serve him in the work of his garden at Citta di Castello, of which we have spoken above.