Treaty of Windsor (1386)

E364523

The Treaty of Windsor (1386) was a landmark alliance agreement between Portugal and England that established one of the oldest enduring diplomatic partnerships in the world.

All labels observed (2)

How this entity was disambiguated

Statements (46)

Predicate Object
instanceOf alliance treaty
bilateral treaty
historical event
countryInvolved Kingdom of England
Kingdom of Portugal
countryOfSigning Kingdom of England
dateSigned 1386
describedAs foundation of the Anglo-Portuguese Alliance
one of the oldest still-valid treaties in the world
establishes commercial privileges
freedom of movement for subjects of both kingdoms
mutual defense obligations
mutual military support
perpetual alliance between Portugal and England
follows Treaty of Tagilde
hasEffectOn Anglo-Portuguese Alliance
surface form: Anglo-Portuguese diplomatic relations

Anglo-Portuguese military cooperation
Anglo-Portuguese trade
hasLongTermConsequence continued military cooperation in later wars
enduring Anglo-Portuguese alliance
strengthening of Portuguese independence from Castile
language Latin
Middle English
Portuguese
legalStatus in force in modified form
motivatedBy English interest in Iberian alliances
need for Portuguese support against Castile
partOf Anglo-Portuguese Alliance
placeSigned Windsor
precedes later Anglo-Portuguese treaties
provides guarantees of territorial integrity
mutual recognition of sovereignty
protection for shipping
rights of residence for merchants
relatedTo 1383–1385 Crisis in Portugal
Battle of Aljubarrota
signatory John I of Portugal NERFINISHED
King Richard II of England
surface form: Richard II of England
signedByRepresentativeOf House of Aviz
House of Plantagenet
subjectMatter military alliance
mutual defense
rights of subjects of both crowns
trade and commerce
typeOfDiplomaticInstrument treaty of friendship and alliance
surface form: treaty of alliance
year 1386

How these facts were elicited

Referenced by (8)

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

John I of Portugal treaty Treaty of Windsor (1386)
Napoleonic invasions of Portugal relatedTo Treaty of Windsor (1386)
this entity surface form: Anglo-Portuguese Treaty of 1373
Treaties of England hasPart Treaty of Windsor (1386)
Anglo-Portuguese Alliance hasPart Treaty of Windsor (1386)
Anglo-Portuguese Alliance legalBasis Treaty of Windsor (1386)
John the Good treaty Treaty of Windsor (1386)
Joanine dynasty notableEvent Treaty of Windsor (1386)
1383–1385 Portuguese interregnum relatedTo Treaty of Windsor (1386)