Louis was later afflicted with a severe fever for months, and missed participating in the capture of Constantinople in 1204.[7] He was too ill to take part in the subsequent forays of his men into Asia Minor, where he had been created Duke of Nicaea, a title he never vindicated as the city was captured by Theodore I Laskaris, founder of the Empire of Nicaea.
He had just recuperated when he participated in the Battle of Adrianople, where he was slain by a force of Cumans led by Kaloyan of Bulgaria ("Johanitza").[8] Louis chased the enemy too far, exhausting his men and horses and stretching them over a broad plain, where he brought himself and the Emperor Baldwin I of Constantinople into a trap.[9]
Allen, S.J. (2017). An Introduction to the Crusades. University of Toronto Press.
Noble, Peter (2007). "Baldwin of Flanders and Henry of Hainault as Military Commanders in the Latin Empire of Constantinople". In Housley, Norman (ed.). Knighthoods of Christ: Essays on the History of the Crusades and the Knights Templar. Ashgate Publishing Limited.
Peter of Blois (1993). Revell, Elizabeth (ed.). The Later Letters of Peter of Blois. Oxford University Press.
Queller, Donald E.; Madden, Thomas F. (1997). The Fourth Crusade: The Conquest of Constantinople. University of Pennsylvania Press.
Thompson, Kathleen (2002). Power and Border Lordship in Medieval France: The County of the Perche, 1000–1226. The Boydell Press.
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