The Sancti Lazari Ordinis Academia Internationalis was set up with the primary objective of promoting historical academic-based research related to the Military and Hospitaller Order of Saint Lazarus of Jerusalem, and other Crusader and related orders of chivalry as this relates to the hierarchy, their components, their glorious traditions and ancient history, as well as their relations with the Roman Catholic Church and with other churches that profess the faith of Christ. One method of encouraging academic research is to bring together interested academics in a forum whereby research is presented and critically discussed. This volume of the Acta Historiae Sancti Lazari Ordinis is the product of one such meeting of the International Academy. The Proceedings cover a wide spectrum of subjects encompassing the millennia.