# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/michael-i-cerularius
# Generated: 2026-09-07T18:55:18.174Z

schema: https://schema.org/Person
url: "https://fame.am/person/michael-i-cerularius"
name: "Michael I Cerularius"
slug: "michael-i-cerularius"
description: "The patriarch whose quarrel with Rome broke Christendom in half. Michael Cerularius turned disputes over bread and liturgy into the 1054 schism that split East from West, a fracture the church has never repaired."
tagline: "Ecumenical patriarch of Constantinople"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Michael_Keroularios.jpg"
gender: "male"
category:
  name: "Religious Figures"
  slug: "religious-figures"
profileType:
  name: "Religious Figure"
  slug: "religious-figure"
birthDate: "1005"
deathDate: "1059-01-21"
livingStatus: "DECEASED"
scores:
  popularity:           52.87
  momentum:             0
  historical:           21.963728
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  60
  trendDirection:       "STABLE"
ranks:
  global:   null
  country:  null
  category: null
tags:
  - name: "Religious Figures"
    slug: "religious-figures"
  - name: "Religious Figure"
    slug: "religious-figure"
  - name: "Religion"
    slug: "religion"
  - name: "Medieval Era"
    slug: "medieval-era"
sources:
  - url: "https://en.wikipedia.org/wiki/Michael_I_Cerularius"
    title: "Wikipedia"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q68482"
    title: "Wikidata"
    type:  "WIKIDATA"
  - url: "https://pantheon.world/profile/person/Michael%20I%20Cerularius"
    title: "Pantheon 2.0"
    type:  "DATABASE"
  - url: "https://bg.wikipedia.org/wiki/%D0%9C%D0%B8%D1%85%D0%B0%D0%B8%D0%BB_I_%D0%9A%D0%B5%D1%80%D1%83%D0%BB%D0%B0%D1%80%D0%B8%D0%B9"
    title: "Михаил I Керуларий"
    type:  "WIKIPEDIA"
  - url: "https://ca.wikipedia.org/wiki/Miquel_Cerulari"
    title: "Miquel Cerulari"
    type:  "WIKIPEDIA"
  - url: "https://cs.wikipedia.org/wiki/Michael_Kerullarios"
    title: "Michael Kerullarios"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Michael_I._(Patriarch)"
    title: "Michael I. (Patriarch)"
    type:  "WIKIPEDIA"
  - url: "https://el.wikipedia.org/wiki/%CE%9C%CE%B9%CF%87%CE%B1%CE%AE%CE%BB_%CE%91%CE%84_%CE%9A%CE%B7%CF%81%CE%BF%CF%85%CE%BB%CE%AC%CF%81%CE%B9%CE%BF%CF%82"
    title: "Μιχαήλ Α΄ Κηρουλάριος"
    type:  "WIKIPEDIA"
  - url: "https://eo.wikipedia.org/wiki/Mikaelo_la_1-a_Kerulario"
    title: "Mikaelo la 1-a Kerulario"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Miguel_I_Cerulario"
    title: "Miguel I Cerulario"
    type:  "WIKIPEDIA"
  - url: "https://eu.wikipedia.org/wiki/Mikel_Zerulario"
    title: "Mikel Zerulario"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%D9%85%DB%8C%D8%AE%D8%A7%D8%A6%DB%8C%D9%84_%D8%B3%D8%B1%D9%88%D9%84%D8%A7%D8%B1%DB%8C%D9%88%D8%B3"
    title: "میخائیل سرولاریوس"
    type:  "WIKIPEDIA"
  - url: "https://fi.wikipedia.org/wiki/Mikael_Kerullarios"
    title: "Mikael Kerullarios"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Michel_Ier_C%C3%A9rulaire"
    title: "Michel Ier Cérulaire"
    type:  "WIKIPEDIA"
  - url: "https://gl.wikipedia.org/wiki/Miguel_Cerulario"
    title: "Miguel Cerulario"
    type:  "WIKIPEDIA"
  - url: "https://he.wikipedia.org/wiki/%D7%9E%D7%99%D7%9B%D7%90%D7%9C_%D7%A7%D7%A8%D7%95%D7%9C%D7%A8%D7%99%D7%95%D7%A1"
    title: "מיכאל קרולריוס"
    type:  "WIKIPEDIA"
  - url: "https://hr.wikipedia.org/wiki/Mihajlo_I._Cerularije"
    title: "Mihajlo I. Cerularije"
    type:  "WIKIPEDIA"
  - url: "https://hu.wikipedia.org/wiki/I._Mih%C3%A1ly_konstantin%C3%A1polyi_p%C3%A1tri%C3%A1rka"
    title: "I. Mihály konstantinápolyi pátriárka"
    type:  "WIKIPEDIA"
  - url: "https://id.wikipedia.org/wiki/Mikael_I_Kerularius"
    title: "Mikael I Kerularius"
    type:  "WIKIPEDIA"
  - url: "https://it.wikipedia.org/wiki/Michele_I_Cerulario"
    title: "Michele I Cerulario"
    type:  "WIKIPEDIA"
  - url: "https://ja.wikipedia.org/wiki/%E3%83%9F%E3%83%8F%E3%82%A4%E3%83%AB1%E4%B8%96_(%E3%82%B3%E3%83%B3%E3%82%B9%E3%82%BF%E3%83%B3%E3%83%87%E3%82%A3%E3%83%8C%E3%83%BC%E3%83%9D%E3%83%AA%E7%B7%8F%E4%B8%BB%E6%95%99)"
    title: "ミハイル1世 (コンスタンディヌーポリ総主教)"
    type:  "WIKIPEDIA"
  - url: "https://ko.wikipedia.org/wiki/%EB%AF%B8%ED%95%98%EC%9D%BC_1%EC%84%B8_%ED%82%A4%EB%A3%B0%EB%9D%BC%EB%A6%AC%EC%98%A4%EC%8A%A4"
    title: "미하일 1세 키룰라리오스"
    type:  "WIKIPEDIA"
  - url: "https://mg.wikipedia.org/wiki/Mikaela_I_Kerolari%C3%B4sy"
    title: "Mikaela I Kerolariôsy"
    type:  "WIKIPEDIA"
  - url: "https://mk.wikipedia.org/wiki/%D0%9C%D0%B8%D1%85%D0%B0%D0%B8%D0%BB_I_%D0%A6%D0%B0%D1%80%D0%B8%D0%B3%D1%80%D0%B0%D0%B4%D1%81%D0%BA%D0%B8"
    title: "Михаил I Цариградски"
    type:  "WIKIPEDIA"
  - url: "https://nl.wikipedia.org/wiki/Micha%C3%ABl_I_van_Constantinopel"
    title: "Michaël I van Constantinopel"
    type:  "WIKIPEDIA"
  - url: "https://af.wikipedia.org/wiki/Migael_I_van_Konstantinopel"
    title: "Migael I van Konstantinopel"
    type:  "WIKIPEDIA"
  - url: "https://arz.wikipedia.org/wiki/%D9%85%D8%A7%D9%8A%D9%83%D9%84_%D8%A7%D9%84%D8%A7%D9%88%D9%84_%D8%B3%D9%8A%D8%B1%D9%88%D9%84%D8%A7%D8%B1%D9%8A%D9%88%D8%B3"
    title: "مايكل الاول سيرولاريوس"
    type:  "WIKIPEDIA"

# bio (long form, separated for readability)
bio: |
  Michael Cerularius became Ecumenical Patriarch of Constantinople in 1043, presiding over the Byzantine church at a moment when tensions with Rome had been simmering for centuries. His clashes with Pope Leo IX over church practices — questions of ritual, authority, theological fine print — escalated through the early 1050s. In 1054 those disputes hardened into formal schism, the Great Schism, severing the Christian world into Catholic West and Orthodox East. He remained patriarch until his death on 21 January 1059, having overseen a split that reshaped religious geography for a millennium.