Infante John, Duke of Viseu
E485224
Infante John, Duke of Viseu was a 15th-century Portuguese prince of the Avis dynasty who held several prominent noble titles and played a key role in the politics of late medieval Portugal.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Infante John, Duke of Viseu canonical | 1 |
| Infante João, Lord of Reguengos | 1 |
| João of Viseu | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4420172 — 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: Infante John, Duke of Viseu Context triple: [Duke of Viseu, heldBy, Infante John, Duke of Viseu]
-
A.
Infante Fernando, Duke of Viseu
Infante Fernando, Duke of Viseu was a 15th-century Portuguese infante and nobleman of the House of Aviz, notable for his high-ranking position in the royal family and influence in the politics of late medieval Portugal.
-
B.
Infante Duarte, Duke of Guimarães
Infante Duarte, Duke of Guimarães, was a 16th-century Portuguese infante of the House of Aviz and a prominent nobleman closely connected to the royal succession.
-
C.
Infante Peter of Portugal
Infante Peter of Portugal was an 18th-century Portuguese prince of the House of Braganza, notable as a younger son of King John V and a prominent member of the royal family.
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D.
Infante Carlos of Portugal
Infante Carlos of Portugal was a Portuguese prince of the House of Braganza, best known as the younger brother of King Joseph I of Portugal.
-
E.
John Manuel, Prince of Portugal
John Manuel, Prince of Portugal was a 16th-century Portuguese infante and heir apparent to the throne whose early death prevented him from becoming king.
- 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: Infante John, Duke of Viseu Target entity description: Infante John, Duke of Viseu was a 15th-century Portuguese prince of the Avis dynasty who held several prominent noble titles and played a key role in the politics of late medieval Portugal.
-
A.
Infante Fernando, Duke of Viseu
Infante Fernando, Duke of Viseu was a 15th-century Portuguese infante and nobleman of the House of Aviz, notable for his high-ranking position in the royal family and influence in the politics of late medieval Portugal.
-
B.
Infante Duarte, Duke of Guimarães
Infante Duarte, Duke of Guimarães, was a 16th-century Portuguese infante of the House of Aviz and a prominent nobleman closely connected to the royal succession.
-
C.
Infante Peter of Portugal
Infante Peter of Portugal was an 18th-century Portuguese prince of the House of Braganza, notable as a younger son of King John V and a prominent member of the royal family.
-
D.
Infante Carlos of Portugal
Infante Carlos of Portugal was a Portuguese prince of the House of Braganza, best known as the younger brother of King Joseph I of Portugal.
-
E.
John Manuel, Prince of Portugal
John Manuel, Prince of Portugal was a 16th-century Portuguese infante and heir apparent to the throne whose early death prevented him from becoming king.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
15th-century Portuguese person
ⓘ
Duke ⓘ Portuguese prince ⓘ nobleman ⓘ |
| aristocraticTitleStyle | Infante of Portugal NERFINISHED ⓘ |
| associatedWith |
Order of Christ
NERFINISHED
ⓘ
Order of Santiago NERFINISHED ⓘ |
| centuryOfBirth | 15th century ⓘ |
| centuryOfDeath | 15th century ⓘ |
| countryOfCitizenship | Kingdom of Portugal NERFINISHED ⓘ |
| dateOfBirth | circa 1448 ⓘ |
| dateOfDeath | 1472 ⓘ |
| era | Late Middle Ages ⓘ |
| father | Edward, King of Portugal NERFINISHED ⓘ |
| floruit | mid-15th century ⓘ |
| givenName | John NERFINISHED ⓘ |
| languageSpoken | Portuguese ⓘ |
| memberOfDynasty | House of Aviz NERFINISHED ⓘ |
| mother | Eleanor of Aragon, Queen of Portugal NERFINISHED ⓘ |
| nativeLabel | Infante João, Duque de Viseu NERFINISHED ⓘ |
| nobleRank | Infante of Portugal NERFINISHED ⓘ |
| nobleTitle |
Constable of Portugal
NERFINISHED
ⓘ
Duke of Beja NERFINISHED ⓘ Duke of Viseu NERFINISHED ⓘ Master of the Order of Christ NERFINISHED ⓘ Master of the Order of Santiago NERFINISHED ⓘ |
| notableFor |
holding multiple high noble offices in Portugal
ⓘ
influence in the reign of Afonso V of Portugal ⓘ |
| participatedIn | politics of late medieval Portugal ⓘ |
| partOf | Portuguese nobility ⓘ |
| placeOfBirth | Kingdom of Portugal NERFINISHED ⓘ |
| placeOfDeath | Kingdom of Portugal NERFINISHED ⓘ |
| politicalAlignment | royal house of Aviz NERFINISHED ⓘ |
| positionHeld |
Constable of Portugal
NERFINISHED
ⓘ
Master of the Order of Christ ⓘ Master of the Order of Santiago NERFINISHED ⓘ |
| region | Iberian Peninsula ⓘ |
| religion | Roman Catholicism ⓘ |
| sexOrGender | male ⓘ |
| sibling |
Afonso V of Portugal
NERFINISHED
ⓘ
Infante Ferdinand, Duke of Viseu NERFINISHED ⓘ Infante Henry the Navigator NERFINISHED ⓘ Infante John, Constable of Portugal NERFINISHED ⓘ Infante Peter, Duke of Coimbra NERFINISHED ⓘ |
| titleHolderOf |
Duchy of Beja
NERFINISHED
ⓘ
Duchy of Viseu 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: Infante John, Duke of Viseu Description of subject: Infante John, Duke of Viseu was a 15th-century Portuguese prince of the Avis dynasty who held several prominent noble titles and played a key role in the politics of late medieval Portugal.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Infante João, Lord of Reguengos
this entity surface form:
João of Viseu