Treaty of Windsor 1386

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The Anglo-Portuguese Alliance was renewed in 1386 with the Treaty of Windsor and the marriage of King John I of Portugal (House of Aviz) with Philippa of Lancaster, daughter of John of Gaunt.

With the victory at the Battle of Aljubarrota, John I was recognized as the undisputed King of Portugal, putting an end to the interregnum and anarchy of the 1383–1385 Crisis. Recognition from Castile would arrive only in 1411, with the signature of the Treaty of Ayton-Segovia.

The treaty, which remains valid at the present time, established a pact of mutual support between the countries. Portugal used it again against its neighbours in 1640, to expel the Spanish kings (House of Habsburg) again from the country.

[edit] See also

• Timeline of Portuguese history
  • Second Dynasty: Aviz (14th to 16th Century)
  • Third Dynasty: Habsburg (Spanish rule) (16th to 17th Century)
  • Fourth Dynasty: Bragança (17th to 20th Century)