Pope Leo IV

Pope Saint

Leo IV
Pope Saint; Leo IV
Bishop of Rome
	Contemporary fresco at San Clemente al Laterano
Church	Catholic Church
Papacy began	10 April 847
Papacy ended	17 July 855
Predecessor	Sergius II
Successor	Benedict III
Orders
Created cardinal	844; by Sergius II
Personal details
Born	790; Rome, Papal States
Died	17 July 855 (aged 64–65); Rome, Papal States
Sainthood
Venerated in	Catholic Church
Attributes	Papal vestments; Rooster;
	Other popes named Leo

Pope Leo IV (790 – 17 July 855) was the bishop of Rome and ruler of the Papal States from 10 April 847 to his death. He is remembered for repairing Roman churches that had been damaged during the Arab raid against Rome, and for building the Leonine Wall around Vatican Hill to protect the city. Pope Leo organized a league of Italian cities who fought and won the sea Battle of Ostia against the Saracens.