In this book, the author published documents that shed light on the 19th-century demographic reality of monastic life. This century was characterized by a significant growth in the number of monks and monasteries with the Lebanese Maronite Order (OLM) establishing new monasteries, thus bringing about a one-third increase in their overall number. The author examines, through these documents, a previously uncharted period of the history of the Order. His work required diligent and patient research covering the assets archived in the OLM archives, the Vatican secret archives and the archives of the Maronite Patriarchate.