The Tree of Europe · Person

Ferdinand I of Aragon

«of Antequera»

The Compromise of Caspe chose him to succeed Martin I, inaugurating the Aragonese branch of the Trastámara dynasty. He had previously been regent of Castile during John II’s minority.

1380 – 1416King of AragonTrastámara · ES

Explore this family · Spanish Atlas Back to people

Historical portraitFerdinand of Antequera in the Sancho de Rojas altarpiece (detail)Juan Rodríguez de Toledo · c. 1410–1415Museo del Prado, MadridPublic domain · PD-Art / PDM 1.0 · Source

This complete profile is available in English. Bibliographic titles retain their original language. Links marked ES open the Spanish edition.

Historical profile

Key details

Birth: 27 November 1380 Documented

Death: 2 April 1416 Documented

Role: King of Aragon

Other recorded names: Ferdinand of Antequera

Dynasty: Trastámara · ES

Territories: Aragon (ES) · Trinacria (ES) · County of Barcelona (ES) · Valencia (ES) · Majorca (ES) · Sardinia (ES)

Recorded governments and reigns

King · Aragon · Reign Pending review1412–1416Effective rule

King · Trinacria · Reign Pending review1412–1416Effective rule

Count · County of Barcelona · County Pending review1412–1416Effective rule

King · Valencia · Reign Pending review1412–1416Effective rule

King · Majorca · Reign Pending review1412–1416Effective rule

King · Sardinia · Reign Pending review1412–1416Effective rule

Family network

Recorded relationships

Parents

John I of CastilePending reviewEleanor of Aragon · ESPending review

Partners

Eleanor of Alburquerque · ESPending review

Children

Alfonso V of AragonJohn II of AragonMaria of Aragon · ESEleanor of Aragon · ES

Crowns and unions

Their titles over time

Follow the changing territories and offices of Ferdinand I of Aragon. Each title retains its own status.

Period

Governments in 1412

Crown of Aragon6 titles and offices
View titles and jurisdictions
- Aragon · ESKing · Effective rule1412–1416
- Trinacria · ESKing · Effective rule1412–1416
- County of Barcelona · ESCount · Effective rule1412–1416
- Valencia · ESKing · Effective rule1412–1416
- Majorca · ESKing · Effective rule1412–1416
- Sardinia · ESKing · Effective rule1412–1416
The kingdoms and territories of the Crown retained their own institutions. Source for this grouping

Annual dates: overlap within one year does not prove that two offices were held on the same day. Regencies and co-rulerships retain their labels.

Documentation

Sources for this profile

Biographical and contextual references in their original language. Sources and methodology.

Evidence for this profile

11 recorded claims · 9 without a claim-specific source. Context references do not by themselves verify every fact.

Dates (2/2 with a precise source)

BirthDocumented
27 November 1380
The authority record gives the birth as 1380-11-27.
Deutsche Nationalbibliothek · GND · Ferdinand I., der Gerechte, Aragonien, König · Vital data: birth date
Reviewed on 2026-10-17 by El Árbol de Europa ·
DeathDocumented
2 April 1416
The authority record gives the death as 1416-04-02.
Deutsche Nationalbibliothek · GND · Ferdinand I., der Gerechte, Aragonien, König · Vital data: death date
Reviewed on 2026-10-17 by El Árbol de Europa ·

Family and relationships (0/3 with a precise source)

FatherPending review
John I of Castile
A precise source has not yet been added.
No individual review recorded ·
MotherPending review
Eleanor of Aragon
A precise source has not yet been added.
No individual review recorded ·
Marriage or partnershipPending review
Eleanor of Alburquerque
A precise source has not yet been added.
No individual review recorded ·

Governments (0/6 with a precise source)

GovernmentPending review
King · Aragon · 1412–1416
A precise source has not yet been added.
No individual review recorded ·
GovernmentPending review
King · Trinacria · 1412–1416
A precise source has not yet been added.
No individual review recorded ·
GovernmentPending review
Count · County of Barcelona · 1412–1416
A precise source has not yet been added.
No individual review recorded ·
GovernmentPending review
King · Valencia · 1412–1416
A precise source has not yet been added.
No individual review recorded ·
GovernmentPending review
King · Majorca · 1412–1416
A precise source has not yet been added.
No individual review recorded ·
GovernmentPending review
King · Sardinia · 1412–1416
A precise source has not yet been added.
No individual review recorded ·

Biographical and contextual references (3)

Editorial history

2026-10-12 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.
2026-10-08 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.
2026-10-04 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.
2026-10-04 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.
2026-10-03 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.
2026-09-30 · The duchy is limited to Dijon and Autun; each other fief now enters the map only under its dated ruler. John III of Namur and the Nevers/Rethel branch were added. The previous shape combined later counties and unrelated lands as if all belonged to the duchy from 1363.
2026-09-28 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.

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