Alfonso IV of Aragon
As an infante, he took part in the conquest of Sardinia. His reign was shaped by the interests of different branches of the royal family and the problems of Mediterranean expansion.
This complete profile is available in English. Bibliographic titles retain their original language. Links marked ES open the Spanish edition.
Key details
Birth: 1299 Documented
Death: 24 January 1336 Documented
Role: King of Aragon
Other recorded names: Alfonso the Benign
Dynasty: Barcelona · ES
Territories: Aragon (ES) · County of Barcelona (ES) · Valencia (ES) · Sardinia (ES)
Recorded relationships
Their titles over time
Follow the changing territories and offices of Alfonso IV of Aragon. Each title retains its own status.
Governments in 1327
- Crown of Aragon4 titles and offices
View titles and jurisdictions
- Aragon · ESKing · Effective rule1327–1336
- County of Barcelona · ESCount · Effective rule1327–1336
- Valencia · ESKing · Effective rule1327–1336
- Sardinia · ESKing · Effective rule1327–1336
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.
Sources for this profile
- Deutsche Nationalbibliothek · GND authority record · Alfons IV., Aragonien, König
- Real Academia de la Historia · Diccionario Biográfico español
- Encyclopaedia Britannica
Biographical and contextual references in their original language. Sources and methodology.
Evidence for this profile
10 recorded claims · 8 without a claim-specific source. Context references do not by themselves verify every fact.
Dates (2/2 with a precise source)
- BirthDocumented
1299
The authority record gives the birth as 1299. - DeathDocumented
24 January 1336
The authority record gives the death as 1336-01-24.
Family and relationships (0/4 with a precise source)
- FatherPending review
James II of Aragon
A precise source has not yet been added. - MotherPending review
Blanche of Anjou
A precise source has not yet been added. - Marriage or partnershipPending review
Teresa d’Entença
A precise source has not yet been added. - Marriage or partnershipPending review
Eleanor of Castile
A precise source has not yet been added.
Governments (0/4 with a precise source)
- GovernmentPending review
King · Aragon · 1327–1336
A precise source has not yet been added. - GovernmentPending review
Count · County of Barcelona · 1327–1336
A precise source has not yet been added. - GovernmentPending review
King · Valencia · 1327–1336
A precise source has not yet been added. - GovernmentPending review
King · Sardinia · 1327–1336
A precise source has not yet been added.
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.
More paths from Alfonso IV of Aragon
Family
James II of Aragon“the Just”King of Aragon · Former king of Sicily1267 – 1327Blanche of Anjou · ESConsort1280 – 1310Teresa d’Entença · ESConsort1300 – 1327Eleanor of Castile · ESConsort1307 – 1359
Peter IV of Aragon“the Ceremonious”King of Aragon1319 – 1387Constance of Aragon · ESConsort1318 – 1346