Treaty of London (1373)
E943024
The Treaty of London (1373) is a medieval diplomatic agreement that established a perpetual alliance of mutual support and friendship between England and Portugal, forming the core of what is often considered the world's oldest continuous alliance.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Treaty of London (1373) canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T11725994 — 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: Treaty of London (1373) Context triple: [Anglo-Portuguese Alliance, hasPart, Treaty of London (1373)]
-
A.
Treaty of London (1573)
The Treaty of London (1573) was an agreement between England and France that helped conclude hostilities following the early stages of the French Wars of Religion and stabilize relations between the two kingdoms.
-
B.
Treaty of London (1550)
The Treaty of London (1550) was a peace agreement that ended the war between England and France during the reign of Edward VI, restoring amicable relations and adjusting territorial claims.
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C.
Treaty of London (1518)
The Treaty of London (1518) was a major non-aggression pact orchestrated by Cardinal Wolsey that sought to establish universal peace among the leading European powers during the reign of Henry VIII.
-
D.
Treaty of London (1641)
The Treaty of London (1641) was an agreement between England and Scotland that formally ended the Bishops’ Wars by confirming Scottish religious and political concessions and imposing financial obligations on Charles I.
-
E.
Treaty of London (1604)
The Treaty of London (1604) was the agreement that ended the Anglo-Spanish War, restoring peace between Spain and England under Philip III and James I.
- 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: Treaty of London (1373) Target entity description: The Treaty of London (1373) is a medieval diplomatic agreement that established a perpetual alliance of mutual support and friendship between England and Portugal, forming the core of what is often considered the world's oldest continuous alliance.
-
A.
Treaty of London (1573)
The Treaty of London (1573) was an agreement between England and France that helped conclude hostilities following the early stages of the French Wars of Religion and stabilize relations between the two kingdoms.
-
B.
Treaty of London (1550)
The Treaty of London (1550) was a peace agreement that ended the war between England and France during the reign of Edward VI, restoring amicable relations and adjusting territorial claims.
-
C.
Treaty of London (1518)
The Treaty of London (1518) was a major non-aggression pact orchestrated by Cardinal Wolsey that sought to establish universal peace among the leading European powers during the reign of Henry VIII.
-
D.
Treaty of London (1641)
The Treaty of London (1641) was an agreement between England and Scotland that formally ended the Bishops’ Wars by confirming Scottish religious and political concessions and imposing financial obligations on Charles I.
-
E.
Treaty of London (1604)
The Treaty of London (1604) was the agreement that ended the Anglo-Spanish War, restoring peace between Spain and England under Philip III and James I.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
alliance treaty
ⓘ
bilateral treaty ⓘ medieval diplomatic agreement ⓘ |
| aimedTo |
secure Portuguese independence from Castile
ⓘ
strengthen England's position against France and Castile ⓘ |
| alsoKnownAs | Anglo-Portuguese Treaty of 1373 NERFINISHED ⓘ |
| category |
1373 in England
ⓘ
1373 in Portugal ⓘ 1373 treaties ⓘ History of Anglo-Portuguese relations ⓘ Treaties of England NERFINISHED ⓘ Treaties of Portugal NERFINISHED ⓘ |
| coreOf | Anglo-Portuguese Alliance NERFINISHED ⓘ |
| countryInvolved |
Kingdom of England
NERFINISHED
ⓘ
Kingdom of Portugal NERFINISHED ⓘ |
| dateSigned | 1373-06-16 ⓘ |
| describedAs | world's oldest continuous alliance ⓘ |
| established |
mutual support and friendship between England and Portugal
ⓘ
perpetual alliance between England and Portugal ⓘ |
| followedBy | Treaty of Windsor (1386) NERFINISHED ⓘ |
| hasEffect |
enduring diplomatic ties between England and Portugal
ⓘ
long-term military cooperation between England and Portugal ⓘ |
| historicalPeriod | Late Middle Ages ⓘ |
| language | Latin ⓘ |
| legalNature |
defensive alliance
ⓘ
offensive alliance ⓘ |
| legalStatus | in force ⓘ |
| obligation |
maintenance of peace and friendship
ⓘ
mutual assistance against enemies ⓘ mutual defense ⓘ mutual military aid ⓘ |
| partOf | Anglo-Portuguese treaties NERFINISHED ⓘ |
| party |
Crown of England
NERFINISHED
ⓘ
Crown of Portugal NERFINISHED ⓘ |
| placeSigned | London NERFINISHED ⓘ |
| precededBy | Treaty of Tagilde NERFINISHED ⓘ |
| recognizedAs | foundation of Anglo-Portuguese Alliance ⓘ |
| relatedConflict | Hundred Years' War NERFINISHED ⓘ |
| signatory |
Edward III of England
NERFINISHED
ⓘ
Ferdinand I of Portugal NERFINISHED ⓘ |
| signedUnderReignOf |
Edward III of England
NERFINISHED
ⓘ
Ferdinand I of Portugal NERFINISHED ⓘ |
| statedDuration | perpetual ⓘ |
| subject |
Anglo-Portuguese relations
ⓘ
medieval international law ⓘ |
| yearSigned | 1373 ⓘ |
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: Treaty of London (1373) Description of subject: The Treaty of London (1373) is a medieval diplomatic agreement that established a perpetual alliance of mutual support and friendship between England and Portugal, forming the core of what is often considered the world's oldest continuous alliance.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.