Meet the 14th century woman who fed the poor, challenged bishops and kings, and perhaps even saved the papacy. Catherine of Siena's influence was felt throughout the kingdoms of Europe. She enjoyed the confidence of popes, royalty, and most of all, the common people of Italy. A complicated woman, she was able to speak bluntly to a queen: "Instead of a woman, you have become the servant and slave of nothingness, making yourself the subject of lies...