Sometime near the end of the twelfth century, Ernoul de Gibelet, a squire or page in the service of Balian of Ibelin, chronicled the events leading up to and following the loss of the Kingdom of Jerusalem in 1187. Although Ernoul's text does not survive in its original form, portions of it were reworked and included in the Old French Continuations of William of Tyre by Bernard the Treasurer. This is a unique source for historians when discussing the causes leading up to the fall of the city of Jerusalem as well as the chaos that followed.
Paris, Bibliothèque de l’Arsenal, MS 677 (Vellum,
Berne, Burgerbibliothek, MS 340 (Vellum, s. xiii)
Lyon, Bibliothèque de la Ville MS 828 (Vellum, s. xiii)
Peter W. Edbury, and John Gordon Rowe. William of Tyre: Historian of the Latin East (Cambridge, 1991), 17-22.
M. R. Morgan. The Chronicle of Ernoul and the Continuations of William of Tyre (Oxford, 1973).