Ferdinand IV of Castile
He inherited the Castilian throne as a child and depended on María de Molina’s defence of his rights. His death left another royal minority, that of Alfonso XI.
This complete profile is available in English. Bibliographic titles retain their original language. Links marked ES open the Spanish edition.
Key details
Birth: 1285 Documented
Death: 1312 Documented
Role: King of Castile and León
Other recorded names: Ferdinand the Summoned
Dynasty: Ivrea-Burgundy · ES
Territories: Castile (ES) · León (ES)
Recorded relationships
Their titles over time
Follow the changing territories and offices of Ferdinand IV of Castile. Each title retains its own status.
Governments in 1295
- Crown of Castile2 titles and offices
View titles and jurisdictions
- Castile · ESKing · Effective rule1295–1312
- León · ESKing · Effective rule1295–1312
Crown of Castile from 1230; the map retains the names Castile and León. 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 · Ferdinand IV., Kastilien-León, 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
7 recorded claims · 1 without a claim-specific source. Context references do not by themselves verify every fact.
Dates (2/2 with a precise source)
- BirthDocumented
1285
The authority record gives the birth as 1285. - DeathDocumented
1312
The authority record gives the death as 1312.
Family and relationships (2/3 with a precise source)
- FatherDocumented
Sancho IV of Castile
The authority record identifies Sancho IV of Castile (GND 119341166) as father. - MotherDocumented
María de Molina
The authority record identifies María de Molina (GND 130515353) as mother. - Marriage or partnershipPending review
Constance of Portugal
A precise source has not yet been added.
Governments (2/2 with a precise source)
- GovernmentDocumented
King · Castile · 1295–1312
The authority record dates this office to 1295–1312. - GovernmentDocumented
King · León · 1295–1312
The authority record dates this office to 1295–1312.
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.