The Crusader state of the Kingdom of Jerusalem, created in 1099, was divided into a number of smaller seigneuries. According to the 13th-century jurist John of Ibelin, the four highest crown vassals in the kingdom proper were :
There were six major officers of the kingdom of Jerusalem: the constable, the marshal, the seneschal, the chamberlain, the butler and the chancellor. At certain times there were also bailiffs, viscounts and castellans.
The Lordship of Oultrejordain or Oultrejourdain was the name used during the Crusades for an extensive and partly undefined region to the east of the Jordan River, an area known in ancient times as Edom and Moab. It was also referred to as Transjordan.
The House of Ibelin was a noble family in the Crusader Kingdom of Jerusalem in the 12th century. They rose from humble beginnings to become one of the most important families in the kingdom, holding various high offices and with extensive holdings in the Holy Land and Cyprus. The family disappeared after the fall of the Kingdom of Cyprus in the 15th century.
Barisan of Ibelin was an important figure in the crusader Kingdom of Jerusalem, and was the founder of the Ibelin family. His name was later written as "Balian" and he is sometimes known as Balian the Elder, Barisan the Old or Balian I. Barisan was lord of Ramla from 1138-1150.
Hugh of Ibelin was an important noble in the Kingdom of Jerusalem and was lord of Ramla from 1152-1169.
Baldwin of Ibelin, also known as Baldwin II of Ramla, was an important noble of the Kingdom of Jerusalem in the 12th century and was lord of Ramla from 1169-1186. He was the second son of Barisan of Ibelin, and was the younger brother of Hugh of Ibelin and older brother of Balian of Ibelin. He first appears in the historical record as a witness to charters in 1148.
Balian of Ibelin, also known as Barisan the Younger, was a crusader noble of the Kingdom of Jerusalem in the 12th century. He was lord of Ibelin from 1170–1193. As the leader of the defense of the city during the siege of Jerusalem in 1187, he surrendered Jerusalem to Saladin on October 2, 1187.
Hugh II, also called Hugh du Puiset, was a Crusader and the Count of Jaffa. He revolted against King Fulk of Jerusalem in 1134.
The double County of Jaffa and Ascalon was one of the four major seigneuries comprising the major Crusader state of the Kingdom of Jerusalem, according to 13th-century commentator John of Ibelin.
The Principality of Galilee was one of the four major seigneuries of the crusader Kingdom of Jerusalem, according to 13th-century commentator John of Ibelin. The direct holdings of the principality centred around Tiberias, in Galilee proper, but with all its vassals, the lordship covered all Galilee and southern Phoenicia. The independent Lordship of Sidon was located between Galilee's holdings. The principality also had its own vassals: the Lordships of Beirut, Nazareth, and Haifa.
The Lordship of Sidon was one of the four major fiefdoms of the Kingdom of Jerusalem, one of the Crusader States. However, in reality, it appears to have been much smaller than the others and had the same level of significance as several neighbors, such as Toron and Beirut, which were sub-vassals.
Manasses of Hierges was an important crusader and constable of the Kingdom of Jerusalem. He was lord of Ramla from 1150–1152.
Eustace I Granier, also known as Eustace Grenier or Eustace Garnier, called in Latin Eustachius Granarius in the charters, was a nobleman from the Diocese of Thérouanne in the County of Saint-Pol who went to the Holy Land either during the First Crusade or around 1100. He became an influential retainer of King Baldwin I of Jerusalem, who granted the Lordship of Sidon and Lordship of Caesarea to him. After Baldwin II of Jerusalem was captured in April 1123 by Belek Ghazi, Eustace was elected Constable of Jerusalem and Bailiff of Jerusalem. Shortly before his death in 1123, he defeated a Fatimid army as the Battle of Yibneh near Ibelin.
The siege of Ascalon took place in 1153, resulting in the capture of that Egyptian fortress by the Crusader Kingdom of Jerusalem.
Roman of Le Puy, also known as Romanus of Puy, was the first lord of Oultrejordain in the Kingdom of Jerusalem from around 1120 to around 1126. He was a nobleman from Auvergne who accompanied Adhemar de Monteil, Bishop of Le Puy, to the Holy Land during the First Crusade. He signed royal charters during the reign of Baldwin I of Jerusalem. Baldwin I or his successor, Baldwin II of Jerusalem, granted Roman the important fief of Oultrejordain, or its northern region. He was deprived of most of his domains because of a rebellion against Baldwin II. He and his son lost their remaining estates after they were accused of conspiring against Baldwin II's successor, Fulk of Anjou, in the early 1130s.
Baldwin I was the castellan and lord of Ramla in the Kingdom of Jerusalem from 1106 to his death. In 1120 he participated in the Council of Nablus. In 1126, the castellany, which controlled the surrounding countryside too, was given in fief the Count of Jaffa. In 1134, Jaffa was confiscated to the king after the rebellion of Hugh II and Ramla became was given to Baldwin, to hold from the count of Jaffa.
Ibelin was a crusader castle in the Latin Kingdom of Jerusalem. It was the fief of the noble house of Ibelin, which later achieved great prominence in the kingdom. Ibelin was built in 1141 by King Fulk of Jerusalem to guard the kingdom's southern border, though its importance declined as the border moved south. It remained the centre of the Lordship of Ibelin, until the collapse of the Kingdom of Jerusalem in 1187. The castle was captured by Saladin in 1187 after the crusader defeat at Hattin, and was destroyed.
Robert of Rouen was the first bishop of Lydda and Ramla from 1099.
The Granier family was a prominent noble family during the Crusades founded at the beginning of the 12th century by Eustachius Granarius, a Flemish nobleman from the Diocese of Thérouanne in the County of Saint-Pol who became lord of Sidon and Caesarea near 1110.