# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/pope-leo-iv
# Generated: 2026-09-02T00:26:54.918Z

schema: https://schema.org/Person
url: "https://fame.am/person/pope-leo-iv"
name: "Pope Leo IV"
slug: "pope-leo-iv"
description: "He fortified the Vatican with walls that still bear his name, rallied a coalition of Italian cities to defeat Saracen raiders at sea, and spent his papacy rebuilding what invaders had burned."
tagline: "Pope of the Catholic Church"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/PopeLeoIV_(cropped).jpg"
gender: "male"
country:
  name: "Italy"
  isoCode: "IT"
category:
  name: "Religious Figures"
  slug: "religious-figures"
profileType:
  name: "Religious Figure"
  slug: "religious-figure"
birthDate: "790"
deathDate: "0855-07-17"
livingStatus: "DECEASED"
scores:
  popularity:           63.52
  momentum:             15.38929440389294
  historical:           23.52960533333334
  currentAttention:     2.220262233035955
  sourceConfidence:     60
  profileCompleteness:  70
  trendDirection:       "STABLE"
ranks:
  global:   null
  country:  null
  category: 96
tags:
  - name: "Religious Figures"
    slug: "religious-figures"
  - name: "Writer / Author"
    slug: "writer-author"
  - name: "Literature"
    slug: "literature"
  - name: "Religion"
    slug: "religion"
  - name: "Medieval Era"
    slug: "medieval-era"
sources:
  - url: "https://en.wikipedia.org/wiki/Pope_Leo_IV"
    title: "Wikipedia"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q228205"
    title: "Wikidata"
    type:  "WIKIDATA"
  - url: "https://pantheon.world/profile/person/Pope%20Leo%20IV"
    title: "Pantheon 2.0"
    type:  "DATABASE"
  - url: "https://ar.wikipedia.org/wiki/%D9%84%D8%A7%D9%88%D9%86_%D8%A7%D9%84%D8%B1%D8%A7%D8%A8%D8%B9"
    title: "لاون الرابع"
    type:  "WIKIPEDIA"
  - url: "https://arz.wikipedia.org/wiki/%D8%A7%D9%84%D9%82%D8%AF%D9%8A%D8%B3_%D9%84%D9%8A%D9%88%D9%86_%D8%A7%D9%84%D8%B1%D8%A7%D8%A8%D8%B9"
    title: "القديس ليون الرابع"
    type:  "WIKIPEDIA"
  - url: "https://bcl.wikipedia.org/wiki/Papa_Leon_IV"
    title: "Papa Leon IV"
    type:  "WIKIPEDIA"
  - url: "https://be_x_old.wikipedia.org/wiki/%D0%9B%D0%B5%D1%9E_IV_(%D0%BF%D0%B0%D0%BF%D0%B0_%D1%80%D1%8B%D0%BC%D1%81%D0%BA%D1%96)"
    title: "Леў IV (папа рымскі)"
    type:  "WIKIPEDIA"
  - url: "https://be.wikipedia.org/wiki/%D0%9B%D0%B5%D1%9E_IV_(%D0%9F%D0%B0%D0%BF%D0%B0_%D0%A0%D1%8B%D0%BC%D1%81%D0%BA%D1%96)"
    title: "Леў IV (Папа Рымскі)"
    type:  "WIKIPEDIA"
  - url: "https://bg.wikipedia.org/wiki/%D0%9B%D1%8A%D0%B2_IV_(%D0%BF%D0%B0%D0%BF%D0%B0)"
    title: "Лъв IV (папа)"
    type:  "WIKIPEDIA"
  - url: "https://br.wikipedia.org/wiki/Leon_IV"
    title: "Leon IV"
    type:  "WIKIPEDIA"
  - url: "https://ca.wikipedia.org/wiki/Papa_Lle%C3%B3_IV"
    title: "Papa Lleó IV"
    type:  "WIKIPEDIA"
  - url: "https://cdo.wikipedia.org/wiki/G%C3%A1u-hu%C3%B2ng_Leo_4-si%C3%A9"
    title: "Gáu-huòng Leo 4-sié"
    type:  "WIKIPEDIA"
  - url: "https://ceb.wikipedia.org/wiki/Le%C3%B3n_IV_(papa)"
    title: "León IV (papa)"
    type:  "WIKIPEDIA"
  - url: "https://cs.wikipedia.org/wiki/Lev_IV."
    title: "Lev IV."
    type:  "WIKIPEDIA"
  - url: "https://da.wikipedia.org/wiki/Pave_Leo_4."
    title: "Pave Leo 4."
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Leo_IV._(Papst)"
    title: "Leo IV. (Papst)"
    type:  "WIKIPEDIA"
  - url: "https://diq.wikipedia.org/wiki/Leo_IV_(papa)"
    title: "Leo IV (papa)"
    type:  "WIKIPEDIA"
  - url: "https://el.wikipedia.org/wiki/%CE%A0%CE%AC%CF%80%CE%B1%CF%82_%CE%9B%CE%AD%CF%89%CE%BD_%CE%94%CE%84"
    title: "Πάπας Λέων Δ΄"
    type:  "WIKIPEDIA"
  - url: "https://eo.wikipedia.org/wiki/Leono_la_4-a"
    title: "Leono la 4-a"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Le%C3%B3n_IV_(papa)"
    title: "León IV (papa)"
    type:  "WIKIPEDIA"
  - url: "https://et.wikipedia.org/wiki/Leo_IV_(paavst)"
    title: "Leo IV (paavst)"
    type:  "WIKIPEDIA"
  - url: "https://eu.wikipedia.org/wiki/Leon_IV.a"
    title: "Leon IV.a"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%D9%BE%D8%A7%D9%BE_%D9%84%D8%A6%D9%88%D9%86_%DA%86%D9%87%D8%A7%D8%B1%D9%85"
    title: "پاپ لئون چهارم"
    type:  "WIKIPEDIA"
  - url: "https://fi.wikipedia.org/wiki/Leo_IV_(paavi)"
    title: "Leo IV (paavi)"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/L%C3%A9on_IV_(pape)"
    title: "Léon IV (pape)"
    type:  "WIKIPEDIA"
  - url: "https://it.wikiquote.org/wiki/Papa_Leone_IV"
    title: "Wikiquote"
    type:  "WEBSITE"
  - url: "https://sr.wikiquote.org/wiki/%D0%9F%D0%B0%D0%BF%D0%B0_%D0%9B%D0%B0%D0%B2_IV"
    title: "Wikiquote"
    type:  "WEBSITE"
  - url: "https://af.wikipedia.org/wiki/Pous_Leo_IV"
    title: "Pous Leo IV"
    type:  "WIKIPEDIA"
  - url: "https://als.wikipedia.org/wiki/Leo_IV._(Papst)"
    title: "Leo IV. (Papst)"
    type:  "WIKIPEDIA"

# bio (long form, separated for readability)
bio: |
  Leo IV became bishop of Rome on 10 April 847, inheriting a city scarred by Arab raids. He set to work repairing the damaged churches and then turned to prevention: he constructed the Leonine Wall around Vatican Hill, a defensive barrier meant to keep future attackers at bay. When Saracen forces threatened again by sea, he organized a league of Italian cities and led them to victory at the Battle of Ostia. He died on 17 July 855, having spent eight years shoring up both the physical and political defenses of Rome.