Geoffrey of Villehardouin was a French knight and chronicler born around 1150. He is best known for his role in the Fourth Crusade, where he participated in the capture of Constantinople in 1204. Villehardouin served as a marshal of the crusader army and documented the events of the crusade in his work, "The Conquest of Constantinople." His chronicle is one of the earliest examples of historical writing in the French language and provides valuable insights into the motivations and experiences of the crusaders. Villehardouin's narrative is notable for its detailed descriptions and firsthand accounts, making it an important source for understanding the Crusades and medieval history.