sentences:  It passed from Giovanni di Bicci jointly to Averardo and Giuliano di Francesco de' Medici, the grandsons of Averardo's younger son Lorenzo; from them, it passed to Cosimo and Lorenzo jointly; and it was ceded to Cosimo's sole ownership in a property division of 1451.In the following year, 1452, Averardo de' Medici's grandson Cosimo de' Medici (known as Cosimo the Elder - the first of the Medici to combine leadership of the family bank with governing the Republic of Florence) commissioned his favourite architect Michelozzo di Bartolomeo (usually known simply as "Michelozzo") to redesign his fortress as a more comfortable country retreat, which could be used for hunting.It was to be one of four villas built by Cosimo, the others being Careggi, Villa Mozzi and Villa Trebbia.