Knights Hospitaller

The Order of Knights of the Hospital of Saint John of Jerusalem, commonly known as the Knights Hospitaller (/ˈhɒspɪtələr/), is a Catholic military order. It was founded in the crusader Kingdom of Jerusalem in the 12th century and had its headquarters there, in Jerusalem and Acre, until 1291, thereafter being based in Kolossi Castle in Cyprus (1302–1310), the island of Rhodes (1310–1522), Malta (1530–1798), and Saint Petersburg (1799–1801).

The Hospitallers arose in the early 12th century at the height of the Cluniac movement, a reformist movement within the Benedictine monastic order that sought to strengthen religious devotion and charity for the poor. Earlier in the 11th century, merchants from Amalfi founded a hospital in Jerusalem dedicated to John the Baptist where Benedictine monks cared for sick, poor, or injured Christian pilgrims to the Holy Land. Blessed Gerard, a lay brother of the Benedictine order, became its head when it was established. After the Christian conquest of Jerusalem in 1099 during the First Crusade, the Hospitallers rose in prominence and were recognized as a distinct order by Pope Paschal II in 1113.

The Order of Saint John was militarized in the 1120s and 1130s, hiring knights that later became Hospitallers. The organization became a military religious order under its own papal charter, charged with the care and defence of the Holy Land, and fought in the Crusades until the Siege of Acre in 1291. Following the reconquest of the Holy Land by Islamic forces, the knights operated from Rhodes, over which they were sovereign, and later from Malta, where they administered a vassal state under the Spanish viceroy of Sicily. The Hospitallers also controlled the North African city of Tripoli for two decades in the 16th century, and they were one of the smallest groups to have colonized parts of the Americas, briefly acquiring four Caribbean islands in the mid-17th century, which they turned over to France in the 1660s.

The knights became divided during the Protestant Reformation, when rich commanderies of the order in northern Germany and the Netherlands became Protestant and largely separated from the Catholic main stem, remaining separate to this day; modern ecumenical relations between the descendant chivalric orders are amicable. The order was suppressed in England, Denmark, and other parts of northern Europe, and was further damaged by Napoleon's capture of Malta in 1798, after which it dispersed throughout Europe.

Today, five organizations continue the traditions of the Knights Hospitaller and have mutually recognized each other: the Sovereign Military Order of Malta, the Most Venerable Order of the Hospital of Saint John, the Bailiwick of Brandenburg of the Chivalric Order of Saint John, the Order of Saint John in the Netherlands, and the Order of Saint John in Sweden.

In 603, Pope Gregory I commissioned the Ravennate Abbot Probus, who was previously Gregory's emissary at the Lombard court, to build a hospital in Jerusalem to treat and care for Christian pilgrims to the Holy Land. In 800, Emperor Charlemagne enlarged Probus' hospital and added a library to it. About 200 years later, in 1009, the Fatimid caliph al-Hakim bi-Amr Allah destroyed the hospital and three thousand other buildings in Jerusalem.

Merchants from Amalfi in southern Italy were given permission by the Egyptian Fatimid Caliph al-Mustansir Billah (r. 1036–1094) to build a monastery in Jerusalem, near the Church of the Holy Sepulchre. The monastery, known as the abbey of St Mary of the Latins (to distinguish them from local Syriac Orthodox Church hierarchy), was served by the Order of Saint Benedict and took in Christian pilgrims travelling to visit the Christian holy sites. The increase in the number of pilgrims led the Benedictine monks to establish two hospitals in the late 1060s, one for men and one for women, with the former known as the Hospital of St John. They did this with the support of a wealthy Amalfian named Mauro of Pantaleone. In the early 1070s the hospital was visited by Archbishop John of Amalfi during his pilgrimage. In later centuries, to help raise money in Europe, the Order of St John made claims that the hospital had been founded more than a century before Christ by the high priest Menelaus and the Greek King Antiochus of Jerusalem, with financing from Judas Maccabeus, and that it was first headed by Saint Stephen and had been visited by Christ and the Apostles. A historian of the Order in the 13th century wrote that this version was not true. In any case, the Hospitallers rose to fame and prestige in a short amount of time.

By the time of the success of the First Crusade in 1099, the Hospital of St John was already well known among pilgrims and was regarded as a separate organization from the monastery of St Mary. The monastic brothers at the hospital saw it as their duty to provide the best possible treatment to the poor. They were given an endowment by Godfrey of Bouillon, the leader of the First Crusade, before he died in 1100. The Latin Patriarch of Jerusalem, Ghibbelin of Arles, formally recognized it as a separate entity from the monastery when he reformed the Catholic hierarchy in Palestine, and a step towards this was taken by Pope Paschal II when he recognized the abbey of St Mary as a church of the Holy See, placing it under his protection and exempting it from paying tithes on its land, on 19 June 1112. The monastic Hospitaller Order was formally created when the Pope issued the papal bull Pie postulatio voluntatis on 15 February 1113 to the head of the Hospital of St John, Blessed Gerard de Martigues. The Pope subordinated the hospital to his own authority and exempted it from paying tithes on the lands it owned, and gave the right to its professed brothers to elect their master. He also placed several other hospitals and hospices in southern Italy under the governance of the Hospital of St John in Jerusalem, as they were located at port cities from which pilgrims traveled to the Holy Land.