Benvenuto Olivieri was a Florentine banker active in Rome during the first half of the sixteenth century. A self made man without any great family patrimony, he rose to prominence during the pontificate of Pope Paul III, becoming involved with a variety of papal enterprises which allowed him to get to the heart of the mechanisms governing the papal finances. Amassing a considerable fortune along the way, Olivieri soon built himself a role as co-ordinator of the appalti (revenue farms) and became one of the most powerful players in the complex network that connected bankers and the papal...