Although it appears to be more of a genealogy than a legal treatise, the Lignages d'Outremer is a document that outlines the histories of the lineages of important families from the Outremer, and describes how and to whom power was transferred from one generation to the next. The work is divided into several chapters (the number varies according to each manuscript), and the history of each family, including the names of descendants and the relationships between the individuals, is provided. When possible, the author adds personal details, such as the circumstances of a person's death or the lands he possessed. The goal of the work, however, is to provide an understanding of which families were active in establishing the territories of the Latin East, and how they founded their systems of law. It was also known as the Lignages des Rois de Jerusalem by some modern editors.
Paris, Bibliothèque Nationale, MS fr. 19026
Venice, Biblioteca Nazionale Marciana, ms. fr. app. 20
Vatican City, Biblioteca Apostolica Vat. Lati. 4789
Munich, Bayerische Staatsbibliothek, cod. gall. 771
Nielen, Marie-Adelaode. Lignages D'outremer. Paris: Academie des Inscriptions et Belles-Lettres 2003.
Edbury, Peter. "The Ibelin Counts of Jaffa: a Previously Unknown Passage From the 'Lignages d'Outremer'." The English Historical Review 89 no. 352 (1974): 604-610.
Collenberg, W. H. Rudt De. "A Fragmentary Copy of an Unknown Recension of the Lignages D'outre-Mer in the Vatican Library." The English Historical Review 98, no. 387 (1983): 311-27.