Prior to the First Crusade (1095-1099) and the capture of Jerusalem in 1099 by the Latins, this first Frankish hospice-hospital only functioned as such. At that time the institution later known as military orders didn't exist yet. In the 12th century, Crusader historian William of Tyre writes about the existence of a monastery, belonging to the people of Amalfi, which took charge of the hospital and its chapel. The latter had been dedicated to the patriarch of Alexandria, John the Almoner (610–616).