Some drawings in the Prints and Drawings Room of the Uffizi, catalogued under different names or anonymity, have aroused the suspicion that they may be works by Jacopo di Giovanni di Francesco known as Jacone, an artist about whom little is known. This has provided an opportunity to reconsider the connection between these works and what was written by Vasari, who, in addition to scattered quotations, dedicates to him a more extensive account in the chapter on Aristotele da Sangallo. The two men, who had very distant and practically incommunicable personalities, professional interests and lifestyles, knew each other personally, due to their frequentation of the same master Andrea del Sarto: and bearing this in mind, it is difficult to explain some striking incongruities in Vasari's text. In fact, while expressing utter contempt for his younger colleague on a human level, Vasari exalts his works, albeit characterized by principles and figurative choices that contradict the theoretical framework supported in his writings and applied with unwavering conviction in his own work as a militant artist.