# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/john-iii-doukas-vatatzes
# Generated: 2026-09-02T02:48:52.167Z

schema: https://schema.org/Person
url: "https://fame.am/person/john-iii-doukas-vatatzes"
name: "John III Doukas Vatatzes"
slug: "john-iii-doukas-vatatzes"
description: "He held together the largest fragment of Byzantium after crusaders sacked Constantinople, ruling from Nicaea for thirty-three years while the old capital sat under Latin occupation."
tagline: "Emperor of Nicaea"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/John_III_Doukas_Vatatzes.jpg"
gender: "male"
category:
  name: "Historical Figures"
  slug: "historical-figures"
profileType:
  name: "Historical Figure"
  slug: "historical-figure"
  entityType: "https://www.wikidata.org/entity/Q2798645"
birthDate: "1192"
deathDate: "1254-11-03"
livingStatus: "DECEASED"
scores:
  popularity:           55.56
  momentum:             4.079144452542597
  historical:           22.21636
  currentAttention:     18.81720430107527
  sourceConfidence:     60
  profileCompleteness:  60
  trendDirection:       "RISING"
ranks:
  global:   null
  country:  null
  category: null
tags:
  - name: "Politicians"
    slug: "politicians"
  - name: "Politician"
    slug: "politician"
  - name: "Politics"
    slug: "politics"
  - name: "Medieval Era"
    slug: "medieval-era"
sources:
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    title: "Wikipedia"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q37072"
    title: "Wikidata"
    type:  "WIKIDATA"
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    title: "Pantheon 2.0"
    type:  "DATABASE"
  - url: "https://an.wikipedia.org/wiki/Chuan_III_Ducas_Vatatz%C3%A9s"
    title: "Chuan III Ducas Vatatzés"
    type:  "WIKIPEDIA"
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    title: "يوحنا الثالث دوكاس فاتاتزس"
    type:  "WIKIPEDIA"
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    title: "يوحنا التالت دوكاس فاتاتزس"
    type:  "WIKIPEDIA"
  - url: "https://azb.wikipedia.org/wiki/%D8%A7%DB%86%DA%86%D9%88%D9%86%D8%AC%D9%88_%DA%98%D8%A7%D9%86_%D8%AF%D9%88%DA%A9%D8%A7%D8%B3_%D9%88%D8%A7%D8%AA%D8%A7%D8%AA%D8%B2%D8%B3"
    title: "اۆچونجو ژان دوکاس واتاتزس"
    type:  "WIKIPEDIA"
  - url: "https://az.wikipedia.org/wiki/III_Duka_%C4%B0oann_Vatas"
    title: "III Duka İoann Vatas"
    type:  "WIKIPEDIA"
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    title: "Ян III Дука Батац"
    type:  "WIKIPEDIA"
  - url: "https://be.wikipedia.org/wiki/%D0%86%D0%B0%D0%B0%D0%BD_III_%D0%94%D1%83%D0%BA%D0%B0_%D0%92%D0%B0%D1%82%D0%B0%D1%86"
    title: "Іаан III Дука Ватац"
    type:  "WIKIPEDIA"
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    title: "Йоан III Дука Ватаци"
    type:  "WIKIPEDIA"
  - url: "https://ca.wikipedia.org/wiki/Joan_III_Ducas_Vatatzes"
    title: "Joan III Ducas Vatatzes"
    type:  "WIKIPEDIA"
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    title: "Jan III. Dukas Vatatzés"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Johannes_III._(Byzanz)"
    title: "Johannes III. (Byzanz)"
    type:  "WIKIPEDIA"
  - url: "https://diq.wikipedia.org/wiki/Ioannes_III"
    title: "Ioannes III"
    type:  "WIKIPEDIA"
  - url: "https://el.wikipedia.org/wiki/%CE%99%CF%89%CE%AC%CE%BD%CE%BD%CE%B7%CF%82_%CE%93%C2%B4_%CE%94%CE%BF%CF%8D%CE%BA%CE%B1%CF%82_%CE%92%CE%B1%CF%84%CE%AC%CF%84%CE%B6%CE%B7%CF%82"
    title: "Ιωάννης Γ´ Δούκας Βατάτζης"
    type:  "WIKIPEDIA"
  - url: "https://eo.wikipedia.org/wiki/Johano_la_3-a_Dukas_Vataco"
    title: "Johano la 3-a Dukas Vataco"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Juan_III_Ducas_Vatatz%C3%A9s"
    title: "Juan III Ducas Vatatzés"
    type:  "WIKIPEDIA"
  - url: "https://et.wikipedia.org/wiki/Johannes_III_Dukas_Vatatzes"
    title: "Johannes III Dukas Vatatzes"
    type:  "WIKIPEDIA"
  - url: "https://eu.wikipedia.org/wiki/Joan_III.a_Dukas_Vatatzes"
    title: "Joan III.a Dukas Vatatzes"
    type:  "WIKIPEDIA"
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    title: "ژان سوم دوکاس واتاتزس"
    type:  "WIKIPEDIA"
  - url: "https://fi.wikipedia.org/wiki/Johannes_III_Dukas"
    title: "Johannes III Dukas"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Jean_III_Doukas_Vatatz%C3%A8s"
    title: "Jean III Doukas Vatatzès"
    type:  "WIKIPEDIA"
  - url: "https://gl.wikipedia.org/wiki/Xo%C3%A1n_III_Ducas_Vatatz%C3%A9s"
    title: "Xoán III Ducas Vatatzés"
    type:  "WIKIPEDIA"
  - url: "https://ha.wikipedia.org/wiki/John_III_Doukas_Vatatzes"
    title: "John III Doukas Vatatzes"
    type:  "WIKIPEDIA"
  - url: "https://af.wikipedia.org/wiki/Johannes_III_Doukas_Vatatzes"
    title: "Johannes III Doukas Vatatzes"
    type:  "WIKIPEDIA"
  - url: "https://als.wikipedia.org/wiki/Johannes_III._(Byzanz)"
    title: "Johannes III. (Byzanz)"
    type:  "WIKIPEDIA"

# bio (long form, separated for readability)
bio: |
  John III Doukas Vatatzes became Emperor of Nicaea around 1221, when the Byzantine world was shattered and the throne of Constantinople belonged to western invaders. From his seat in Anatolia he governed what remained of the empire through three decades of careful statecraft. He died on 3 November 1254 and passed the crown to his son Theodore II Doukas Laskaris.