Information about Pope Leo IV

Pope Leo IV (790 - 17 July 855)

Pope Saint Leo IV was pope from 10 April 847 to his death in 855. He is remembered for repairing Roman churches that had been damaged during Arab raids on Rome, and for building the Leonine Wall around Vatican Hill. Pope Leo organized a league of Italian cities who fought the sea Battle of Ostia against the Saracens.

Leo IV died on 17 July 855 and succeeded by Benedict III.

Pope Leo IV reigned in...
Reigned asIn CountryFromToCoins Issued
Papa Leo Quartus (Pope Leo IV) Flag of Holy See Holy See 10 April 847 17 July 855
Papa Leo Quartus (Pope Leo IV) Flag of Papal States Papal States 10 April 847 17 July 855
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