Teen Queen of Jerusalem

Isabella II was the daughter of John of Brienne and Maria of Montferrat. Maria (1192 - 1212) was the daughter of Isabella I, Queen of Jerusalem and Conrad of Montferrat, one of the major participants in the Third Crusade. When Isabella I died in 1205, Maria became Queen of Jerusalem at the age of 12. She was married in 1210 to John of Brienne. Isabella II (1212 - 4 May 1228) was their only child.

Isabella was born in Sicily, and was declared Queen when she was only a few days old, since her mother died shortly after giving birth. John of Brienne managed her regency. Note that her father did not have a direct claim on the throne; he was only styled king by virtue of marriage.

When Holy Roman Emperor Frederick II of Sicily agreed to go on Crusade, he wanted to guarantee that he would become King of Jerusalem. This Crusade was called by Pope Honorius III. Honorius, John of Brienne, and Frederick met in Ferentino, not far south of Rome, and arranged that the widower Frederick would marry Isabella, who was 11 at the time. Honorius hoped this would cement Frederick to the Crusade and guarantee that it would take place.

Frederick managed to delay going, however. Honorius died and was succeeded by Gregory IX, who pushed Frederick to fulfill his vow, finally excommunicating him to get him to start. Frederick still delayed until the wedding took place.

In August 1225, when she was 13, the two were finally married by proxy; it is possible that they had still not met. Days after, since she had reached a majority, she was crowned queen of Jerusalem in her own right. Frederick sent 20 galleys to bring Isabella to Brindisi (on Italy's "heel") where they were married in person. By this act, Isabella also became Holy Roman Empress as well as Queen Consort of Sicily and Germany.

Frederick then declared himself rightful King of Jerusalem by marriage and transferred to himself all rights and privileges previously held in the kingdom by John of Brienne as Regent, his new father-in-law.

Isabella was sent to live in Palermo in northern Sicily while Frederick went on Crusade. There she gave birth at the tender age of 14 to a daughter, in November 1226. The daughter died a year later. In 1228, on 25 April, she gave birth to a son, Conrad, but she died of complications a few days later.

Who was John of Brienne, and how did he come to be married to one Queen of Jerusalem and father another? Come back tomorrow and I'll explain.