The Tree of Europe · Person

Alfonso III of Aragon

«the Liberal»

He conquered Minorca and dealt with the consequences of the Sicilian conflict. His concessions to the Aragonese nobility reflect the institutional limits on royal power.

1265 – 1291King of AragonBarcelona · ES

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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: 1265 Documented

Death: 18 June 1291 Documented

Role: King of Aragon

Other recorded names: Alfonso the Liberal

Dynasty: Barcelona · ES

Territories: Aragon (ES) · County of Barcelona (ES) · Valencia (ES)

Recorded governments and reigns

King · Aragon · Reign Pending review1285–1291Effective rule

Count · County of Barcelona · County Pending review1285–1291Effective rule

King · Valencia · Reign Pending review1285–1291Effective rule

Family network

Recorded relationships

Parents

Peter III of AragonDocumentedConstance II of Sicily · ESPending review

Crowns and unions

Their titles over time

Follow the changing territories and offices of Alfonso III of Aragon. Each title retains its own status.

Period

Governments in 1285

Crown of Aragon3 titles and offices
View titles and jurisdictions
- Aragon · ESKing · Effective rule1285–1291
- County of Barcelona · ESCount · Effective rule1285–1291
- Valencia · ESKing · Effective rule1285–1291
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

7 recorded claims · 4 without a claim-specific source. Context references do not by themselves verify every fact.

Dates (2/2 with a precise source)

BirthDocumented
1265
The authority record gives the birth as 1265.
Deutsche Nationalbibliothek · GND · Alfons III., Aragonien, König · Vital data: birth date
Reviewed on 2026-10-17 by El Árbol de Europa ·
DeathDocumented
18 June 1291
The authority record gives the death as 1291-06-18.
Deutsche Nationalbibliothek · GND · Alfons III., Aragonien, König · Vital data: death date
Reviewed on 2026-10-17 by El Árbol de Europa ·

Family and relationships (1/2 with a precise source)

FatherDocumented
Peter III of Aragon
The authority record identifies Peter III of Aragon (GND 118592939) as father.
Deutsche Nationalbibliothek · GND · Alfons III., Aragonien, König · Relationships: father → GND 118592939
Reviewed on 2026-10-17 by El Árbol de Europa ·
MotherPending review
Constance II of Sicily
A precise source has not yet been added.
No individual review recorded ·

Governments (0/3 with a precise source)

GovernmentPending review
King · Aragon · 1285–1291
A precise source has not yet been added.
No individual review recorded ·
GovernmentPending review
Count · County of Barcelona · 1285–1291
A precise source has not yet been added.
No individual review recorded ·
GovernmentPending review
King · Valencia · 1285–1291
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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