Battle of Ostia

The naval Battle of Ostia took place in 849 in the Tyrrhenian Sea between Muslim pirates and an Italian league of Papal, Neapolitan, Amalfitan, and Gaetan ships. The battle ended in favor of the Italian league, as they defeated the pirates. It is one of the few events to occur in southern Italy during the ninth century that is still commemorated today, largely through the walls named after Leo and for the Renaissance painting Battaglia di Ostia by Raphael.

Starting in 827, Muslim forces began the conquest of Sicily. In 846, Muhammad Abul Abbas of Sicily, emir of the Aghlabids invaded eastern Rome, plundering various basilicas, including Old Saint Peter's which was outside the Aurelian walls, for their treasures.

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