Alfonso, Prince of Asturias

E187067

Alfonso, Prince of Asturias was the younger brother of Queen Isabella I of Castile and a Castilian heir whose early death helped precipitate the succession crisis that led to Isabella’s rise to the throne.

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All labels observed (2)

Statements (45)

Predicate Object
instanceOf Castilian prince
heir apparent
human
associatedWith Castilian nobility opposed to Henry IV
Henry IV of Castile
Isabella I of Castile
birthName Alfonso of Castile
burialPlace Ávila
causeOfDeath unknown
chronology 15th-century person
countryOfCitizenship Crown of Castile
dateOfBirth 1453-11-15
dateOfDeath 1468-07-05
describedBySource Castilian chronicles of the 15th century
ethnicGroup Castilian
father John II of Castile
givenName Alfonso
house House of Trastámara
languageOfWorkOrName Spanish
mannerOfDeath sudden death
memberOf House of Trastámara
monarchOf de facto claimant to the Crown of Castile
mother Isabella of Portugal, Queen of Castile
nativeLanguage Spanish
nobleTitle Count of Cervera
Duke of Montblanc
Lord of Balaguer
Prince of Asturias
Prince of Girona
notableFor being recognized by a faction of nobles as king Alfonso XII of Castile
being younger brother of Queen Isabella I of Castile
his early death influencing the Castilian succession and Isabella’s rise to the throne
partOf War of the Castilian Succession
surface form: Castilian succession crisis of 1464–1479
placeOfBirth Crown of Castile
Tordesillas
placeOfDeath Cardeñosa
Crown of Castile
Province of Ávila
positionHeld Prince of Asturias
religion Roman Catholicism
sexOrGender male
shortDescription 15th-century Castilian prince and heir whose early death affected the Castilian succession
sibling Henry IV of Castile
Isabella I of Castile
titleHeldFrom Prince of Asturias, from 1465

How these facts were elicited

The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.

Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10.

# Requirements
- If you don't know the subject at all, return an empty list.
- If the subject is not a named entity, return an empty list.
- Include at least one triple where predicate is "instanceOf".
- Do not get too wordy.
- Separate several objects into multiple triples with one object.
Input
Subject: Alfonso, Prince of Asturias
Description of subject: Alfonso, Prince of Asturias was the younger brother of Queen Isabella I of Castile and a Castilian heir whose early death helped precipitate the succession crisis that led to Isabella’s rise to the throne.

Referenced by (5)

Full triples — surface form annotated when it differs from this entity's canonical label.

Isabella I of Castile sibling Alfonso, Prince of Asturias
Henry IV of Castile sibling Alfonso, Prince of Asturias
Cartuja de Miraflores burialPlaceOf Alfonso, Prince of Asturias
John II child Alfonso, Prince of Asturias
subject surface form: John II of Castile
this entity surface form: Alfonso of Castile, Prince of Asturias
Spanish royal family in exile hasMember Alfonso, Prince of Asturias