Siege of Jerusalem (1099) in the context of "King of Jerusalem"

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 Church of the Holy Sepulchre, also known as the Church of the Resurrection, is a fourth-century church in the Christian Quarter of the Old City of Jerusalem. The church is simultaneously the seat of the Armenian Patriarchate of Jerusalem, Greek Orthodox Patriarchate of Jerusalem, and the Catholic Latin Patriarchate of Jerusalem. It is the holiest site in Christianity and it has been an important pilgrimage site for Christians since the fourth century.

According to traditions dating to the fourth century, the church contains both the site where Jesus was crucified at Calvary, or Golgotha, and the location of Jesus's empty tomb, where he was buried and, resurrected. Both locations are considered immensely holy sites by most Christians. The church and rotunda was built under Constantine the Great in the 4th century and destroyed by al-Hakim in 1009. Al-Hakim's son allowed Emperor Constantine IX Monomachos to reconstruct the church, which was completed in 1048. After it was captured by the crusaders in 1099, it continued to undergo modifications, resulting in a significant departure from the original structure. Several renovations and restorations were made under the Ottomans. The tomb itself is enclosed by a 19th-century shrine called the Aedicule.

Edgar Ætheling or Edgar II (c. 1052 – 1125 or after) was the last male member of the royal house of Cerdic of Wessex. He was elected King of England by the Witan in 1066 but never crowned. After exile and war against the Normans, Edgar migrated to Norman Apulia (modern-day Italy) and possibly partook in the First Crusade (or, at least, made pilgrimage to Jerusalem following its conquest). In later life, Edgar was entangled in Norman dynastic struggles before retiring to a quiet life in the countryside.

Tancred of Galilee (also Tancred the Marquis; c. 1075 – 5 or 12 December 1112) was an Italian nobleman of Frankish origin, counted amongst the four main leaders of the First Crusade. He is credited as the first Christian to enter Jerusalem after its conquest in 1099. Present at the foundation of the Kingdom of Jerusalem, Tancred became Prince of Galilee and regent of the Principality of Antioch in his uncle Bohemond's behalf. He then married princess Cecilie of France, thus becoming son-in-law to King Philip I of the Franks, and brother-in-law to King Fulk of Jerusalem (Cecilie's half-brother).

Despite his usual misidentification as an Italo-Norman, it is well established that Tancred's link to the Norman House of Hauteville was solely through his mother Emma (a sister of Bohemond I of Antioch). His long debated paternal lineage, on the other hand, has since been placed in the Northern-Italian ruling house of the Aleramids, a family of Frankish origin.

Torquato Tasso (/ˈtæsoʊ/ TASS-oh, also US: /ˈtɑːsoʊ/ TAH-soh, Italian: [torˈkwaːto ˈtasso]; 11 March 1544 – 25 April 1595) was an Italian poet of the 16th century, known for his 1581 poem Gerusalemme liberata (Jerusalem Delivered), in which he depicts a highly imaginative version of the combats between Christians and Muslims at the end of the First Crusade, during the Siege of Jerusalem of 1099.

Tasso had a mental illness and died a few days before he was to be crowned on the Capitoline Hill as the king of poets by Pope Clement VIII. His work was widely translated and adapted, and until the beginning of the 20th century, he remained one of the most widely read poets in Europe.

Peter the Hermit (c. 1050 – 8 July 1115 or 1131), also known as Little Peter, Peter of Amiens (French: Pierre d'Amiens) or Peter of Achères (French: Pierre d'Achères), was a Roman Catholic priest of Amiens and a key figure during the military expedition from France to Jerusalem in 1096 known as the People's Crusade. Amongst Jews he is best remembered for the massacres of Jews that occurred under his leadership and the precedent they set for subsequent Crusades. He has sometimes been called "Blessed" Peter the Hermit, although he has not been beatified in the Catholic Church.

After leading his followers through Europe, Peter’s armies were almost entirely annihilated by the Seljuk Turks, forcing him to winter in Constantinople and join up with the Prince’s Crusade. After that, he continued to have a leadership role in varying degrees of significance as the Crusaders invaded the Levant and took Jerusalem.