John II of Portugal
E27814
John II of Portugal was the 15th-century king who consolidated royal power at home and advanced Portuguese maritime exploration, helping to lay the foundations of Portugal’s overseas empire.
All labels observed (6)
| Label | Occurrences |
|---|---|
| John II of Portugal canonical | 27 |
| King John II of Portugal | 3 |
| João II de Portugal | 2 |
| João II | 1 |
| João II of Portugal | 1 |
| King João II of Portugal | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T206612 — 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.
Target entity: John II of Portugal Context triple: [Treaty of Tordesillas, signatory, John II of Portugal]
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A.
Pedro Nuno Santos
Pedro Nuno Santos is a Portuguese politician who serves as a prominent figure in the Socialist Party and has held key government positions, including Minister of Infrastructure and Housing.
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B.
Henrique Lopes de Mendonça
Henrique Lopes de Mendonça was a Portuguese playwright, poet, and naval officer best known for writing the lyrics to Portugal’s national anthem, “A Portuguesa.”
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C.
António
António is a common Portuguese given name, notably borne by António Guterres, the Secretary-General of the United Nations.
-
D.
Henry the Navigator
Henry the Navigator was a 15th-century Portuguese prince who sponsored pioneering voyages along the West African coast, helping launch Europe’s Age of Exploration and the Portuguese maritime empire.
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E.
Charles IV of Spain
Charles IV of Spain was a late 18th- and early 19th-century Bourbon king whose weak rule and reliance on favorites contributed to political instability and the circumstances leading to the Peninsular War and the decline of Spanish power.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: John II of Portugal Target entity description: John II of Portugal was the 15th-century king who consolidated royal power at home and advanced Portuguese maritime exploration, helping to lay the foundations of Portugal’s overseas empire.
-
A.
Pedro Nuno Santos
Pedro Nuno Santos is a Portuguese politician who serves as a prominent figure in the Socialist Party and has held key government positions, including Minister of Infrastructure and Housing.
-
B.
Henrique Lopes de Mendonça
Henrique Lopes de Mendonça was a Portuguese playwright, poet, and naval officer best known for writing the lyrics to Portugal’s national anthem, “A Portuguesa.”
-
C.
António
António is a common Portuguese given name, notably borne by António Guterres, the Secretary-General of the United Nations.
-
D.
Henry the Navigator
Henry the Navigator was a 15th-century Portuguese prince who sponsored pioneering voyages along the West African coast, helping launch Europe’s Age of Exploration and the Portuguese maritime empire.
-
E.
Charles IV of Spain
Charles IV of Spain was a late 18th- and early 19th-century Bourbon king whose weak rule and reliance on favorites contributed to political instability and the circumstances leading to the Peninsular War and the decline of Spanish power.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
House of Aviz
ⓘ
King of Portugal ⓘ human ⓘ monarch ⓘ |
| birthDate | 1455-03-03 ⓘ |
| birthPlace |
Portugal
ⓘ
surface form:
Kingdom of Portugal
Lisbon ⓘ |
| countryOfCitizenship |
Portugal
ⓘ
surface form:
Kingdom of Portugal
|
| deathDate | 1495-10-25 ⓘ |
| deathPlace |
Algarve
ⓘ
Alvor ⓘ Portugal ⓘ
surface form:
Kingdom of Portugal
|
| era |
Age of Exploration
ⓘ
surface form:
Age of Discovery
|
| father | Afonso V of Portugal ⓘ |
| fullName | John II of Portugal self-link ⓘ |
| givenName | John ⓘ |
| house | House of Aviz ⓘ |
| knownFor |
advancing Portuguese maritime exploration
ⓘ
centralization of royal power in Portugal ⓘ laying foundations of the Portuguese overseas empire ⓘ policies in the Age of Discovery ⓘ promoting the search for a sea route to India ⓘ strengthening the Portuguese monarchy ⓘ supporting exploration along the west coast of Africa ⓘ |
| language | Portuguese ⓘ |
| monarchOf |
Portugal
ⓘ
surface form:
Kingdom of Portugal
|
| mother | Isabella of Coimbra ⓘ |
| nativeName |
John II of Portugal
self-linksurface differs
ⓘ
surface form:
João II de Portugal
|
| nickname | the Perfect Prince ⓘ |
| notableAchievement |
extension of Portuguese exploration to the Congo region
ⓘ
sponsorship of Bartolomeu Dias’s rounding of the Cape of Good Hope ⓘ |
| notableEvent |
Treaty of Alcáçovas
ⓘ
Treaty of Tordesillas ⓘ |
| policy |
confiscation of noble estates
ⓘ
limiting power of the high nobility ⓘ strengthening royal finances ⓘ |
| positionHeld |
Kings of Portugal
ⓘ
surface form:
King of Portugal and the Algarves
|
| predecessor | Afonso V of Portugal ⓘ |
| regnalName |
John II of Portugal
self-linksurface differs
ⓘ
surface form:
João II
|
| reignEnd | 1495 ⓘ |
| reignStart | 1481 ⓘ |
| religion | Roman Catholicism ⓘ |
| roleIn | negotiation of the Treaty of Tordesillas ⓘ |
| sexOrGender | male ⓘ |
| sibling |
Duke of Viseu
ⓘ
surface form:
Infante Ferdinand, Duke of Viseu
|
| spouse | Eleanor of Viseu ⓘ |
| successor |
King Manuel I of Portugal
ⓘ
surface form:
Manuel I of Portugal
|
| supportedExplorer |
Afonso de Paiva
ⓘ
Bartolomeu Dias ⓘ Diogo Cão ⓘ Pêro da Covilhã ⓘ |
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.
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.
Subject: John II of Portugal Description of subject: John II of Portugal was the 15th-century king who consolidated royal power at home and advanced Portuguese maritime exploration, helping to lay the foundations of Portugal’s overseas empire.
Referenced by (35)
Full triples — surface form annotated when it differs from this entity's canonical label.