Yolande of Brienne (1212 - 1228), also known as Yolanda or Isabella II, inherited the Kingdom of Jerusalem as an infant in 1212. Events The first Great Fire of London burns most of the city to the ground. ... Events The Sixth Crusade is launched by Frederick II, Holy Roman Emperor, after delays due to sickness and an excommunication from Pope Gregory IX. Conrad IV of Germany becomes titular King of Jerusalem, with Frederick II as regent. ... The Kingdom of Jerusalem was a short-lived country established in the 12th century by the First Crusade. ...

She was the daughter of John of Brienne and Maria of Montferrat. Because John did not have a direct claim on the throne, Yolande succeeded Maria upon Maria's death in 1212. John ruled as regent until 1225, when she married Frederick II, Holy Roman Emperor. Frederick claimed the kingdom for himself; when Yolande died after giving birth to their son Conrad in 1228, Frederick ruled as regent, settling a truce with the Muslims in 1229 during the Sixth Crusade. John of Brienne (c. ... Maria of Montferrat (c. ... Events Births Thomas Aquinas, Christian philosopher and theologian (d. ... Frederick II (left) meets al-Kamil (right). ... Conrad IV (April 25, 1228 Andria, Italy - May 21, 1254), Lavello, was king of Jerusalem 1228-1254, Germany 1237-1254, and Sicily 1250-1254. ... Events March 18 - Sixth Crusade of Emperor Frederick II ends in truce with Sultan al-Kamil and coronation of Frederick as King of Jerusalem. ... The Sixth Crusade began in 1228 as an attempt to reconquer Jerusalem. ...

See also: Other young rulers This is an chronological List of youngsters in history. ...

Maria of Montferrat (c. ... John of Brienne (c. ... This is a list of Kings of Jerusalem, from 1099 to 1291, as well as claimants to the title up to the present day. ... Frederick II (left) meets al-Kamil (right). ... Conrad IV (April 25, 1228 Andria, Italy - May 21, 1254), Lavello, was king of Jerusalem 1228-1254, Germany 1237-1254, and Sicily 1250-1254. ...