At the end of the 15th century, Giuliano della Rovere (who later became Pope Giulio II and commissioned Michelangelo to paint the ceiling of the Sistine Chapel) was called to put an end to the conflicts between Florence and Pisa. The Cardinal was often a guest of the famous Salimbeni family known for the Palazzo Salimbeni, a notable building in the Piazza Salimbeni and also the medieval headquarters of Monte dei Paschi di Siena, one of the oldest banks in continuous existence and a major player in the Sienese economy.  During one of his visits, at a lunch held in his honor, the Cardinal asked a page boy for a jug of his favorite wine that he always used to drink during his stays. Unfortunately the boy mistakenly brought back a jug of water, then the Cardinal, who was known for his heavy drinking and hot temper, flung the water in a fit of rage and yelled "Ah! Malabrocca!"...meaning "awful jugful". From then on, the land which produced the future Pope's favorite wine was known as "Podere Malabrocca".