John of Trastámara
E700018
John of Trastámara was the heir apparent to the thrones of the Catholic Monarchs Ferdinand II of Aragon and Isabella I of Castile in late 15th-century Spain, whose early death altered the line of succession that eventually led to Habsburg rule.
All labels observed (1)
| Label | Occurrences |
|---|---|
| John of Trastámara canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7851254 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: John of Trastámara Context triple: [John, Prince of Asturias, fullName, John of Trastámara]
-
A.
Henry of Aragon
Henry of Aragon was a 15th-century Aragonese infante and nobleman who played a significant role in the politics of the Crown of Aragon during the reign of his brother Alfonso V.
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B.
Henry of Trastámara
Henry of Trastámara was a 14th-century king of Castile and León who founded the Trastámara dynasty after seizing the throne from his half-brother Peter I during a civil war.
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C.
Peter of Castile
Peter of Castile, also known as Peter the Cruel or Peter the Just, was the 14th-century king of Castile and León whose turbulent reign was marked by civil war, shifting alliances, and a lasting reputation for both brutality and administrative reform.
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D.
Peter of Aragon
Peter of Aragon was an infante (prince) of the Crown of Aragon from the Trastámara dynasty, known primarily as a younger son of King Ferdinand I of Aragon in the early 15th century.
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E.
Bernard de Balliol
Bernard de Balliol was a 12th-century Anglo-Norman nobleman and baron, known for his role in the politics and warfare of northern England and southern Scotland.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: John of Trastámara Target entity description: John of Trastámara was the heir apparent to the thrones of the Catholic Monarchs Ferdinand II of Aragon and Isabella I of Castile in late 15th-century Spain, whose early death altered the line of succession that eventually led to Habsburg rule.
-
A.
Henry of Aragon
Henry of Aragon was a 15th-century Aragonese infante and nobleman who played a significant role in the politics of the Crown of Aragon during the reign of his brother Alfonso V.
-
B.
Henry of Trastámara
Henry of Trastámara was a 14th-century king of Castile and León who founded the Trastámara dynasty after seizing the throne from his half-brother Peter I during a civil war.
-
C.
Peter of Castile
Peter of Castile, also known as Peter the Cruel or Peter the Just, was the 14th-century king of Castile and León whose turbulent reign was marked by civil war, shifting alliances, and a lasting reputation for both brutality and administrative reform.
-
D.
Peter of Aragon
Peter of Aragon was an infante (prince) of the Crown of Aragon from the Trastámara dynasty, known primarily as a younger son of King Ferdinand I of Aragon in the early 15th century.
-
E.
Bernard de Balliol
Bernard de Balliol was a 12th-century Anglo-Norman nobleman and baron, known for his role in the politics and warfare of northern England and southern Scotland.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
Spanish infante
ⓘ
heir apparent ⓘ member of the House of Trastámara ⓘ prince of Asturias ⓘ |
| associatedWith |
Catholic Monarchs
NERFINISHED
ⓘ
Habsburg succession in Spain ⓘ |
| countryOfCitizenship |
Crown of Aragon
NERFINISHED
ⓘ
Crown of Castile ⓘ |
| dynasty | House of Trastámara NERFINISHED ⓘ |
| father | Ferdinand II of Aragon NERFINISHED ⓘ |
| givenName | John NERFINISHED ⓘ |
| heirTo |
Crown of Aragon
NERFINISHED
ⓘ
Crown of Castile NERFINISHED ⓘ thrones of the Catholic Monarchs ⓘ |
| historicalPeriod | late 15th-century Spain ⓘ |
| house | House of Trastámara NERFINISHED ⓘ |
| mother | Isabella I of Castile NERFINISHED ⓘ |
| nativeName |
Juan de Aragón y Castilla
NERFINISHED
ⓘ
Juan de Trastámara NERFINISHED ⓘ |
| notableFor |
being heir apparent to the Catholic Monarchs
ⓘ
his early death altering the Spanish succession ⓘ his role in the dynastic context leading to Habsburg rule in Spain ⓘ |
| partOf | Catholic Monarchs’ dynastic plans ⓘ |
| positionHeld |
Count of Cervera
NERFINISHED
ⓘ
Duke of Montblanc NERFINISHED ⓘ Lord of Balaguer NERFINISHED ⓘ Prince of Asturias NERFINISHED ⓘ Prince of Girona NERFINISHED ⓘ |
| relative |
Catherine of Aragon
NERFINISHED
ⓘ
Charles V, Holy Roman Emperor NERFINISHED ⓘ Habsburg dynasty NERFINISHED ⓘ Isabella of Aragon, Queen of Portugal NERFINISHED ⓘ Joanna of Castile NERFINISHED ⓘ Maria of Aragon, Queen of Portugal NERFINISHED ⓘ Philip the Handsome NERFINISHED ⓘ Prince Miguel da Paz NERFINISHED ⓘ |
| religion | Roman Catholicism ⓘ |
| sibling |
Catherine of Aragon
NERFINISHED
ⓘ
Isabella of Aragon, Queen of Portugal NERFINISHED ⓘ Joanna of Castile NERFINISHED ⓘ Maria of Aragon, Queen of Portugal NERFINISHED ⓘ |
| spouse | Margaret of Austria NERFINISHED ⓘ |
| successorInHeirship | Joanna of Castile NERFINISHED ⓘ |
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: John of Trastámara Description of subject: John of Trastámara was the heir apparent to the thrones of the Catholic Monarchs Ferdinand II of Aragon and Isabella I of Castile in late 15th-century Spain, whose early death altered the line of succession that eventually led to Habsburg rule.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.