The Kingdom of Jerusalem, one of the Crusader states that was 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 (referred to as barons) in the kingdom proper were the count of Jaffa and Ascalon, the prince of Galilee, the lord of Sidon, and the lord of Oultrejordain.
There were also a number of independent seigneuries, and some land held under direct royal control, such as Jerusalem itself, Acre and Tyre.