The Kingdom of Jerusalem, also known as the Crusader Kingdom, was a Crusader state that was established in the Levant immediately after the First Crusade. It lasted for almost two hundred years, from the accession of Godfrey of Bouillon in 1099 until the fall of Acre in 1291. Its history is divided into two periods with a brief interruption in its existence, beginning with its collapse after the siege of Jerusalem in 1187 and its restoration after the Third Crusade in 1192.
The County of Tripoli (1102–1289) was one of the Crusader states. It was founded in the Levant in the modern-day region of Tripoli, northern Lebanon and parts of western Syria. When the Frankish Crusaders, mostly southern French forces – captured the region in 1109, Bertrand of Toulouse became the first count of Tripoli as a vassal of King Baldwin I of Jerusalem. From that time on, the rule of the county was decided not strictly by inheritance but by factors such as military force, favour and negotiation. In 1289, the County of Tripoli fell to the Muslim Mamluks of Cairo under Sultan Qalawun, and the county was absorbed into Mamluk Sultanate.
The Kingdom of Thessalonica was a short-lived Crusader State founded after the Fourth Crusade over conquered Byzantine lands in today's territory of Northern Greece and Thessaly.
The Principality of Achaea or Principality of Morea was one of the vassal states of the Latin Empire, which replaced the Byzantine Empire after the capture of Constantinople during the Fourth Crusade. It became a vassal of the Kingdom of Thessalonica, along with the Duchy of Athens, until Thessalonica was captured by Epirus in 1224. After this, Achaea became the dominant power in Greece, lasting continuously for 227 years and cumulatively for 229.
The Crusade of 1101 was a minor crusade of three separate movements, organized in 1100 and 1101 in the successful aftermath of the First Crusade. It is also called the Crusade of the Faint-Hearted due to the number of participants who joined this crusade after having turned back from the First Crusade.
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 Battle of Cresson was a small battle between Frankish and Ayyubid forces on 1 May 1187 at the "Spring of the Cresson." While the exact location of the spring is unknown, it is located in the environs of Nazareth. The conflict was a prelude to decisive defeat of the Kingdom of Jerusalem at the Battle of Hattin two months later.
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 to 1193. As the leader of the defense of the city during the siege of Jerusalem in 1187, he surrendered Jerusalem to Saladin on 2 October 1187.
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, grandson of Balian. 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.
The Lordship of Ramla was one of the Crusader vassal states of the Latin Kingdom of Jerusalem. It has been vassal to and part of the County of Jaffa and Ascalon.
Eustace I Granier, also known as Eustace Grenier or Eustace Garnier, called in Latin Eustachius Granarius in the charters, was a Flemish crusader who took part in the First Crusade. He became lord of Caesarea in 1101 and lord of Sidon in 1110. On 18 April 1123, he was elected constable and bailiff of Jerusalem during the captivity of Baldwin II of Jerusalem. Shortly before his death, he defeated a Fatimid army at the Battle of Yibneh near Ibelin.
Eustace Grenier is quoted in a text in verse written during his life in honour of the knights of the diocese of Thérouanne who accompanied Baldwin of Boulogne to the Holy Land.
Contemporary authors and historians identify Eustace Grenier as a nobleman from the diocese of Thérouanne in the County of Saint-Pol. Alan V. Murray, historian of the Crusades, writes: "However, his origins can be established with a high degree of certainty. The Versus de viris illustribus diocesis Tarvanensis qui in sacra fuere expeditione identifies him as a Fleming from the diocese of Therouanne".
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.
Pagan the Butler was lord of Oultrejordain in the Kingdom of Jerusalem from around 1126. He was first mentioned as the butler of Baldwin II of Jerusalem in 1120. He ordered the erection of Kerak Castle which became his seat in 1142.
The Frankokratia, also known as Latinokratia and, for the Venetian domains, Venetokratia or Enetokratia, was the period in Greek history after the Fourth Crusade (1204), when a number of primarily French and Italian states were established by the Partitio terrarum imperii Romaniae on the territory of the dismantled Byzantine Empire.
The Barony of Karytaina or of Skorta was a medieval Frankish fiefdom of the Principality of Achaea, located in the Peloponnese peninsula in Greece, centred on the town of Karytaina in the mountainous region known as Skorta.
Maurice of Montreal was Lord of Oultrejordain from around 1149. He succeeded his uncle, Pagan the Butler, and continued the construction of Kerak Castle. He granted fiefs to the Knights Hospitaller in his domains. He participated in the siege of Ascalon in 1153.
The Lordship of Botrun was a fief around the small town of Botrun in the County of Tripoli. The crusaders occupied Botrun in 1104, then the lordship was formed in 1115, until it was seized by the Mamluks of Qalawun in 1289.
The House of Granier 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.
Lordship of the Isles 
Lordship of Mechelen 
Lordship of Schellenberg 
Lordship of Montpellier 
Lordship of Diepholz 
Lordship of Heinsberg 
Lordship of Glamorgan 
Lordship of Broich 
Lordship of Sidon 
Lordship of Liddesdale 
Lordship of Ibelin 
Lordship of Myllendonk 
Lordship of Anholt 
Lordship of Ireland 
Lordship of Reipoltskirchen 
Lordship of Léon 
Lordship of Galloway 
Lordship of Argos and Nauplia 
Lordship of Ruppin 
Lordship of Rostock 
Lordship of Stargard 
Lordship of Homburg 
Lordship of Hanau 
Lordship of Sinoutskerke and Baarsdorp 
Lordship of Franckenstein 
Lordship of Chios 
Lordship of Prilep 
Lordship of Purmerend, Purmerland and Ilpendam 
Lordship of Winneburg and Beilstein 
Lordship of Frisia 
Lordship of Overijssel 
Lordship of Kniphausen 
Lordship of Eglofs