The church of Santa Maria in Provenzano was built to hold the miraculous image of Our Lady to which the people of Siena were deeply attached. The Medici family felt it was a good idea to encourage the spread of this devotion as a way of consolidating the power of the Grand Dukes in the city and to overshadow that of Our Lady of Votive Offerings, the emblem of the defeat of the Florentines at . . .