Written sometime between 1197 and 1205, the Livre au Roi is the oldest example of vernacular legal writing from the Latin East. The text contains fifty-two chapters relating to the legal relationship between the king and his vassals. The text may have been intended for Aimery of Lusignan who struggled to reassert his authority over the native aristocracy in the years following the disastrous losses at Hattin and Jerusalem.
Greilsammer, Myriam, ed. Le Livre au Roi: Introduction, Notes et Édition Critique. Paris: Académie des Inscriptions et Belles-Lettres, 1995.
Prawer, Joshua, B. Z. Kedar, Hans Eberhard Mayer, R. C. Smail, and Ben-Tsevi Yad Yitshak. Outremer: Studies in the History of the Crusading Kingdom of Jerusalem Presented to Joshua Prawer. Jerusalem: Yad Izhak Ben-Zvi Institute, 1982.
Grandclaude, Maurice. Classement Sommaire Des Manuscrits Des Principaux Livres Des Assises De Jerusalem. Paris: Societe Anonyme du Recueil Sirey, 1926.