Guillaume de Nangis
Guillaume de Nangis, or William of Nangis, was a monk and chronicler from the Abbey of Saint-Denis near Paris who wrote between 1285 and 1300. He was best known for his Chronicon, which documented the history of France from Troy until the time of his death. It was continued by others until 1368. He also completed a life of St. Louis IX and wrote a life of Philippe III. His chronicle was a major source for the Grandes Chroniques de France and Guillaume himself may have helped write the Chroniques during this time.