Elected in 847 AD, Pope Leo IV was a native Roman and reigned during a time of great danger for Italy and Christendom as a whole. By this time, Muslim armies had come out of the deserts of Arabia to invade and conquer the Middle East, all of North Africa and were well advanced into Spain. The island of Sicily, for example, had been conquered and made into a Muslim emirate for almost twenty years when Leo IV came to the Throne of St Peter. That same year, 847, saw the Islamic conquest of Bari in Apulia and the establishment of the Emirate of Bari. Muslim raids on Italian coastal towns and cities were a frequent occurrence and the Eternal City of Rome was not immune from danger. Most worrisome to the Pope was the number of people who, in return for special treatment for themselves, aided the Saracen invaders in making war and pillaging the lands of their fellow Italians in rival cities. The year before his election, Muslim invaders had sailed up the Tiber River and pillaged the outskirts of Rome itself, desecrating the churches of Old St Peter's and St Paul's Outside-the-Walls. Further damage was prevented only by the still standing Aurelian Wall, built in the Third Century by the Emperor of Rome.
|Pope St Leo IV waving to crowds below|
|Map of the Leonine City|