Francesco Vanni (1563/64-1610) was the most important artist in Siena at the turn of the 17th century. His works combine dazzling technical virtuosity and brilliant coloring with the naturalistic approach employed by his more famous contemporaries Annibale Carracci and Caravaggio. He painted altarpieces for every significant church in Siena, as well as for Saint Peter's and other churches in Rome. Beautifully illustrated and featuring new...