# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/john-viii-palaiologos
# Generated: 2026-09-01T05:24:53.593Z

schema: https://schema.org/Person
url: "https://fame.am/person/john-viii-palaiologos"
name: "John VIII Palaiologos"
slug: "john-viii-palaiologos"
description: "The emperor who spent his reign negotiating Christianity's great schism while his capital's walls crumbled. John VIII ruled the last flicker of Rome from Constantinople, bargaining church unity for western swords that never came."
tagline: "Byzantine emperor"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Palaio.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: "1392-12-18"
deathDate: "1448-10-31"
livingStatus: "DECEASED"
scores:
  popularity:           55.14
  momentum:             0.6290903141361257
  historical:           22.467748
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  60
  trendDirection:       "FALLING"
ranks:
  global:   null
  country:  null
  category: null
tags:
  - name: "Politicians"
    slug: "politicians"
  - name: "Historical Figure"
    slug: "historical-figure"
  - name: "Royalty"
    slug: "royalty"
  - name: "Politics"
    slug: "politics"
  - name: "Medieval Era"
    slug: "medieval-era"
sources:
  - url: "https://en.wikipedia.org/wiki/John_VIII_Palaiologos"
    title: "Wikipedia"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q37062"
    title: "Wikidata"
    type:  "WIKIDATA"
  - url: "https://pantheon.world/profile/person/John%20VIII%20Palaiologos"
    title: "Pantheon 2.0"
    type:  "DATABASE"
  - url: "https://ar.wikipedia.org/wiki/%D9%8A%D9%88%D8%AD%D9%86%D8%A7_%D8%A7%D9%84%D8%AB%D8%A7%D9%85%D9%86_%D8%A8%D8%A7%D9%84%D9%8A%D9%88%D9%84%D9%88%D8%AC"
    title: "يوحنا الثامن باليولوج"
    type:  "WIKIPEDIA"
  - url: "https://arz.wikipedia.org/wiki/%D9%8A%D9%88%D8%AD%D9%86%D8%A7_%D8%A7%D9%84%D8%AA%D8%A7%D9%85%D9%86_%D8%A8%D8%A7%D9%84%D9%8A%D9%88%D9%84%D9%88%D8%AC"
    title: "يوحنا التامن باليولوج"
    type:  "WIKIPEDIA"
  - url: "https://az.wikipedia.org/wiki/VIII_%C4%B0ohann_Paleoloq"
    title: "VIII İohann Paleoloq"
    type:  "WIKIPEDIA"
  - url: "https://be.wikipedia.org/wiki/%D0%86%D0%B0%D0%B0%D0%BD_VIII_%D0%9F%D0%B0%D0%BB%D0%B5%D0%B0%D0%BB%D0%BE%D0%B3"
    title: "Іаан VIII Палеалог"
    type:  "WIKIPEDIA"
  - url: "https://bg.wikipedia.org/wiki/%D0%99%D0%BE%D0%B0%D0%BD_VIII_%D0%9F%D0%B0%D0%BB%D0%B5%D0%BE%D0%BB%D0%BE%D0%B3"
    title: "Йоан VIII Палеолог"
    type:  "WIKIPEDIA"
  - url: "https://ca.wikipedia.org/wiki/Joan_VIII_Pale%C3%B2leg"
    title: "Joan VIII Paleòleg"
    type:  "WIKIPEDIA"
  - url: "https://cs.wikipedia.org/wiki/Jan_VIII._Palaiologos"
    title: "Jan VIII. Palaiologos"
    type:  "WIKIPEDIA"
  - url: "https://cy.wikipedia.org/wiki/Ioan_VIII_Palaiologos"
    title: "Ioan VIII Palaiologos"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Johannes_VIII._(Byzanz)"
    title: "Johannes VIII. (Byzanz)"
    type:  "WIKIPEDIA"
  - url: "https://diq.wikipedia.org/wiki/Ioannes_VIII"
    title: "Ioannes VIII"
    type:  "WIKIPEDIA"
  - url: "https://el.wikipedia.org/wiki/%CE%99%CF%89%CE%AC%CE%BD%CE%BD%CE%B7%CF%82_%CE%97%CE%84_%CE%A0%CE%B1%CE%BB%CE%B1%CE%B9%CE%BF%CE%BB%CF%8C%CE%B3%CE%BF%CF%82"
    title: "Ιωάννης Η΄ Παλαιολόγος"
    type:  "WIKIPEDIA"
  - url: "https://eo.wikipedia.org/wiki/Johano_la_8-a_Palajologo"
    title: "Johano la 8-a Palajologo"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Juan_VIII_Pale%C3%B3logo"
    title: "Juan VIII Paleólogo"
    type:  "WIKIPEDIA"
  - url: "https://eu.wikipedia.org/wiki/Joan_VIII.a_Paleologo"
    title: "Joan VIII.a Paleologo"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%DA%98%D8%A7%D9%86_%D9%87%D8%B4%D8%AA%D9%85%D8%8C_%D8%A7%D9%85%D9%BE%D8%B1%D8%A7%D8%AA%D9%88%D8%B1_%D8%A8%DB%8C%D8%B2%D8%A7%D9%86%D8%B3"
    title: "ژان هشتم، امپراتور بیزانس"
    type:  "WIKIPEDIA"
  - url: "https://fi.wikipedia.org/wiki/Johannes_VIII_Palaiologos"
    title: "Johannes VIII Palaiologos"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Jean_VIII_Pal%C3%A9ologue"
    title: "Jean VIII Paléologue"
    type:  "WIKIPEDIA"
  - url: "https://gl.wikipedia.org/wiki/Xo%C3%A1n_VIII_Pale%C3%B3logo"
    title: "Xoán VIII Paleólogo"
    type:  "WIKIPEDIA"
  - url: "https://he.wikipedia.org/wiki/%D7%99%D7%95%D7%97%D7%A0%D7%9F_%D7%94%D7%A9%D7%9E%D7%99%D7%A0%D7%99%2C_%D7%A7%D7%99%D7%A1%D7%A8_%D7%94%D7%90%D7%99%D7%9E%D7%A4%D7%A8%D7%99%D7%94_%D7%94%D7%91%D7%99%D7%96%D7%A0%D7%98%D7%99%D7%AA"
    title: "יוחנן השמיני, קיסר האימפריה הביזנטית"
    type:  "WIKIPEDIA"
  - url: "https://hr.wikipedia.org/wiki/Ivan_VIII._Paleolog"
    title: "Ivan VIII. Paleolog"
    type:  "WIKIPEDIA"
  - url: "https://hu.wikipedia.org/wiki/VIII._I%C3%B3ann%C3%A9sz_biz%C3%A1nci_cs%C3%A1sz%C3%A1r"
    title: "VIII. Ióannész bizánci császár"
    type:  "WIKIPEDIA"
  - url: "https://id.wikipedia.org/wiki/Ioannes_VIII_Palaiologos"
    title: "Ioannes VIII Palaiologos"
    type:  "WIKIPEDIA"
  - url: "https://af.wikipedia.org/wiki/Johannes_VIII_Palaiologos"
    title: "Johannes VIII Palaiologos"
    type:  "WIKIPEDIA"
  - url: "https://an.wikipedia.org/wiki/Chuan_VIII_Paleologo"
    title: "Chuan VIII Paleologo"
    type:  "WIKIPEDIA"

# bio (long form, separated for readability)
bio: |
  John VIII Palaiologos became Roman emperor in 1425, inheriting a Constantinople already squeezed by Ottoman expansion. Born in December 1392, he spent twenty-three years on the throne attempting what his predecessors could not: reuniting the fractured halves of Christianity in hopes that Catholic Europe would send armies to hold the East. The theological summit, the papal negotiations, the promises — all of it bought time but no relief. He died on 31 October 1448, passing the throne to his brother Constantine XI, who would watch the city fall five years later.