Pope military aid from Pope Urban II in the ongoing Byzantine–Seljuq wars. Urban, at the council of Clermont, called the First Crusade to assist the Byzantine Empire to regain the old Christian territories, especially Jerusalem. With the East–West Schism, the Eastern Orthodox Church and the Catholic Church split definitively in 1054. This fracture was caused more by political events than by slight divergences of creed. Popes had galled the Byzantine emperors by siding with the king of the Franks, crowning a rival Roman emperor, appropriating the Exarchate of Ravenna, and driving into Greek Italy. In the Middle Ages, popes struggled with
Pope Urban X Pope Urban X Pope Urban X is a fictional pope created by French writer Voltaire in his book "Candide". Voltaire did this in order to avoid any consequences that would be incurred upon him, for in "Candide" Pope Urban X has an illegitimate child. In Chapter 11 an old woman declares herself to be the daughter of Pope Urban X and the Princess of Palestrina. (Voltaire was being particularly cautious, since at the time and now the highest numbered Pope Urban was the eighth). An 1829 edition of "Candide" was the first to add a posthumous footnote by Voltaire to