# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/ferdinand-i-of-portugal
# Generated: 2026-09-01T01:39:11.093Z

schema: https://schema.org/Person
url: "https://fame.am/person/ferdinand-i-of-portugal"
name: "Ferdinand I of Portugal"
slug: "ferdinand-i-of-portugal"
description: "A 14th-century Portuguese king who earned two nicknames — one for his looks, one for his loyalty — and whose failure to produce a male heir plunged the kingdom into civil war the moment he died."
tagline: "King of Portugal"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Ferdinand_I_of_Portugal_-_Chronique_d'_Angleterre_(Volume_III)_(late_15th_C)%2C_f.201v_-_BL_Royal_MS_14_E_IV_(cropped).png"
gender: "male"
country:
  name: "Portugal"
  isoCode: "PT"
category:
  name: "Historical Figures"
  slug: "historical-figures"
profileType:
  name: "Historical Figure"
  slug: "historical-figure"
  entityType: "https://www.wikidata.org/entity/Q2798645"
birthDate: "1345-10-31"
deathDate: "1383-10-22"
livingStatus: "DECEASED"
scores:
  popularity:           54.25
  momentum:             0
  historical:           22.161404
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  70
  trendDirection:       "STABLE"
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/Ferdinand_I_of_Portugal"
    title: "Wikipedia"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q108442"
    title: "Wikidata"
    type:  "WIKIDATA"
  - url: "https://pantheon.world/profile/person/Ferdinand%20I%20of%20Portugal"
    title: "Pantheon 2.0"
    type:  "DATABASE"
  - url: "https://azb.wikipedia.org/wiki/%D8%A8%DB%8C%D8%B1%DB%8C%D9%86%D8%AC%DB%8C_%D9%81%D8%B1%D9%86%D8%A7%D9%86%D8%AF%D9%88_(%D9%BE%D9%88%D8%B1%D8%AA%D9%88%D9%82%D8%A7%D9%84)"
    title: "بیرینجی فرناندو (پورتوقال)"
    type:  "WIKIPEDIA"
  - url: "https://az.wikipedia.org/wiki/I_Ferdinand_(Portuqaliya_kral%C4%B1)"
    title: "I Ferdinand (Portuqaliya kralı)"
    type:  "WIKIPEDIA"
  - url: "https://be.wikipedia.org/wiki/%D0%A4%D0%B5%D1%80%D0%BD%D0%B0%D0%BD%D0%B4%D1%83_I"
    title: "Фернанду I"
    type:  "WIKIPEDIA"
  - url: "https://bg.wikipedia.org/wiki/%D0%A4%D0%B5%D1%80%D0%BD%D0%B0%D0%BD%D0%B4%D1%83"
    title: "Фернанду"
    type:  "WIKIPEDIA"
  - url: "https://br.wikipedia.org/wiki/Fernando_Ia%C3%B1_Portugal"
    title: "Fernando Iañ Portugal"
    type:  "WIKIPEDIA"
  - url: "https://ca.wikipedia.org/wiki/Ferran_I_de_Portugal"
    title: "Ferran I de Portugal"
    type:  "WIKIPEDIA"
  - url: "https://co.wikipedia.org/wiki/Ferdinando_I_di_Portugallu"
    title: "Ferdinando I di Portugallu"
    type:  "WIKIPEDIA"
  - url: "https://cs.wikipedia.org/wiki/Ferdinand_I._Portugalsk%C3%BD"
    title: "Ferdinand I. Portugalský"
    type:  "WIKIPEDIA"
  - url: "https://da.wikipedia.org/wiki/Ferdinand_1._af_Portugal"
    title: "Ferdinand 1. af Portugal"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Ferdinand_I._(Portugal)"
    title: "Ferdinand I. (Portugal)"
    type:  "WIKIPEDIA"
  - url: "https://el.wikipedia.org/wiki/%CE%A6%CE%B5%CF%81%CE%B4%CE%B9%CE%BD%CE%AC%CE%BD%CE%B4%CE%BF%CF%82_%CE%91%CE%84_%CF%84%CE%B7%CF%82_%CE%A0%CE%BF%CF%81%CF%84%CE%BF%CE%B3%CE%B1%CE%BB%CE%AF%CE%B1%CF%82"
    title: "Φερδινάνδος Α΄ της Πορτογαλίας"
    type:  "WIKIPEDIA"
  - url: "https://eo.wikipedia.org/wiki/Fernando_la_1-a_(Portugalio)"
    title: "Fernando la 1-a (Portugalio)"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Fernando_I_de_Portugal"
    title: "Fernando I de Portugal"
    type:  "WIKIPEDIA"
  - url: "https://eu.wikipedia.org/wiki/Fernando_I.a_Portugalgoa"
    title: "Fernando I.a Portugalgoa"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%D9%81%D8%B1%D9%86%D8%A7%D9%86%D8%AF%D9%88%DB%8C_%DB%8C%DA%A9%D9%85%D8%8C_%D9%BE%D8%A7%D8%AF%D8%B4%D8%A7%D9%87_%D9%BE%D8%B1%D8%AA%D8%BA%D8%A7%D9%84"
    title: "فرناندوی یکم، پادشاه پرتغال"
    type:  "WIKIPEDIA"
  - url: "https://fi.wikipedia.org/wiki/Ferdinand_I_(Portugali)"
    title: "Ferdinand I (Portugali)"
    type:  "WIKIPEDIA"
  - url: "https://fo.wikipedia.org/wiki/Ferdinand_I_av_Portugal"
    title: "Ferdinand I av Portugal"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Ferdinand_Ier_(roi_de_Portugal)"
    title: "Ferdinand Ier (roi de Portugal)"
    type:  "WIKIPEDIA"
  - url: "https://gl.wikipedia.org/wiki/Fernando_I_de_Portugal"
    title: "Fernando I de Portugal"
    type:  "WIKIPEDIA"
  - url: "https://he.wikipedia.org/wiki/%D7%A4%D7%A8%D7%A0%D7%A0%D7%93%D7%95_%D7%94%D7%A8%D7%90%D7%A9%D7%95%D7%9F%2C_%D7%9E%D7%9C%D7%9A_%D7%A4%D7%95%D7%A8%D7%98%D7%95%D7%92%D7%9C"
    title: "פרננדו הראשון, מלך פורטוגל"
    type:  "WIKIPEDIA"
  - url: "https://hu.wikipedia.org/wiki/I._Ferdin%C3%A1nd_portug%C3%A1l_kir%C3%A1ly"
    title: "I. Ferdinánd portugál király"
    type:  "WIKIPEDIA"
  - url: "https://id.wikipedia.org/wiki/Fernando_I_dari_Portugal"
    title: "Fernando I dari Portugal"
    type:  "WIKIPEDIA"
  - url: "https://ar.wikipedia.org/wiki/%D9%81%D8%B1%D9%86%D8%A7%D9%86%D8%AF%D9%88_%D8%A7%D9%84%D8%A3%D9%88%D9%84_%D9%85%D9%84%D9%83_%D8%A7%D9%84%D8%A8%D8%B1%D8%AA%D8%BA%D8%A7%D9%84"
    title: "فرناندو الأول ملك البرتغال"
    type:  "WIKIPEDIA"
  - url: "https://arz.wikipedia.org/wiki/%D9%81%D8%B1%D9%86%D8%A7%D9%86%D8%AF%D9%88_%D8%A7%D9%84%D8%A7%D9%88%D9%84_%D9%85%D9%84%D9%83_%D8%A7%D9%84%D8%A8%D8%B1%D8%AA%D8%AC%D8%A7%D9%84"
    title: "فرناندو الاول ملك البرتجال"
    type:  "WIKIPEDIA"

# bio (long form, separated for readability)
bio: |
  Ferdinand became King of Portugal in 1367 at twenty-one, already known as "the Handsome." Four years later he briefly claimed the crown of Galicia, holding onto that title until 1373 even after the claim went cold. The other nickname, "the Inconstant," stuck for reasons the record hints at but doesn't spell out. What mattered in the end was simpler: no legitimate sons. When he died in October 1383, two weeks shy of his thirty-eighth birthday, the throne had no clear successor, and Portugal tipped straight into the crisis that would define the next two years.