Treaty of Windsor

E661530

The Treaty of Windsor is a 1386 alliance agreement between Portugal and England that established one of the oldest enduring diplomatic and military alliances in the world.

All labels observed (2)

Label Occurrences
Treaty of Windsor canonical 2
Treaty of Windsor (1899) 1

How this entity was disambiguated

Statements (45)

Predicate Object
instanceOf alliance treaty
bilateral treaty
appliesTo trade between Portugal and England
war and peace situations
continentContext Europe
countryInvolved Kingdom of England
Kingdom of Portugal
dateSigned 1386-05-09
describedAs cornerstone of Anglo-Portuguese relations
one of the oldest still-in-force diplomatic alliances
establishes commercial cooperation
freedom of movement for merchants
mutual defense obligations
mutual military assistance
perpetual alliance between Portugal and England
follows Treaty of Tagilde
guarantees mutual aid in case of attack
protection of merchants
safe conduct for subjects of both kingdoms
hasEffectOn foreign policy of England
foreign policy of Portugal
hasLongTermImpactOn Anglo-Portuguese military cooperation
Anglo-Portuguese trade relations
hasPart commercial privileges clause
friendship and peace clause
military alliance clause
mutual defense clause
historicalPeriod Late Middle Ages
language Latin
legalStatus in force
motivatedBy dynastic and strategic interests
need for mutual support against Castile
placeSigned Kingdom of England
Windsor
precedes later Anglo-Portuguese treaties
recognizedAs foundation of continuous Anglo-Portuguese alliance
relatedTo Anglo-Portuguese Alliance
signatory John I of Portugal
Richard II of England
signedUnderReignOf John I of Portugal
Richard II of England
strengthenedBy marriage of John I of Portugal and Philippa of Lancaster
typeOfAlliance diplomatic alliance
military alliance
yearSigned 1386

How these facts were elicited

Referenced by (3)

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

Treaties of Portugal hasPart Treaty of Windsor
Kingdom of Portugal treaty Treaty of Windsor
Anglo-Portuguese Alliance hasPart Treaty of Windsor (1899)
linked to: Treaty of Windsor