Joan of Arc was a French military leader. As a girl, she began hearing voices—those of saints, she believed—exhorting her to aid the dauphin, who was being kept from the throne by the English in the Hundred Years War. Joan organized the French resistance that defeated the English siege of Orléans and had the dauphin crowned Charles VII. Captured and sold to the English by the Burgundians thereafter, she was tried for heresy and witchcraft. How old was she when she was burned at the stake? Discuss (http://forum.thefreedictionary.com/postst58188_Pope-Benedict-XV-Canonizes-Joan-of-Arc--1920-.aspx)