Isabella II also known as Yolande of Brienne, was a princess of French origin who became monarch of Jerusalem.
Background
Isabella II was born in Andria, in the southern Italian Kingdom of Sicily. Maria was the daughter of Queen Isabella I of Jerusalem by her second husband Conrad I, and heiress, on her mother"s death, of the Kingdom of Jerusalem. Because her father John did not have a direct claim on the throne, he ruled as regent.
Career
She was the only child of Maria of Montferrat, Queen of Jerusalem, and John of Brienne. Maria died shortly after giving birth to Isabella II in 1212, possibly by puerperal fever. Because of this, Isabella II was proclaimed Queen of Jerusalem when she was only a few days old.
She spent her time in Frederick"s harem in Palermo.
Frederick finally sailed from Brindisi on 8 September 1227 for Jerusalem but fell ill at Otranto, where Louis IV, Landgrave of Thuringia, had been put ashore. Frederick postponed the journey while he recovered.
She is buried in Andria Cathedral. Frederick finally embarked to Jerusalem on 28 June.