Perhaps the most remarkable thing about the Kings of Jerusalem is the fact that they were elected rather than born.
Recognizing, however, that life was fragile in the Holy Land in the 12th century, Baldwin IV also made his vassals swear to consult with the Kings of England and France and the Pope before a electing a king to succeed his nephew, if the boy did not survive into adulthood. This elaborate attempt to curtail the sovereignty of the High Court of Jerusalem failed.
When Baldwin V died less than a year after his uncle, no one had time for such a lengthy process as sending to London, Paris and Rome for advice. (The English and French kings could be counted on not to agree on anything anyway, since they were at war with one another.) Instead, while the High Court was meeting in Tiberius, Princess Sibylla and her husband staged a coup: they persuaded the Patriarch to crown and anoint Sibylla queen of Jerusalem in the Church of the Holy Sepulcher. She then crowned her husband Guy de Lusignan as her consort.