The Man in the Iron Mask 1640 to 19 November 1703) was an unidentified prisoner who was arrested in 1669 or 1670 and subsequently held in a number of French prisons, including the Bastille and the Fortress of Pignerol (modern Pinerolo, Italy). He was held in the custody of the same jailer, Bénigne Dauvergne de Saint-Mars, for a period of 34 years. He died on 19 November 1703 under the name Marchioly, during the reign of King Louis XIV of France (1643 to 1715)