Treaty of Windsor (1386)
The Treaty of Windsor is the diplomatic alliance signed between Portugal and England on 9 May 1386 at Windsor and sealed by the marriage of King John I of Portugal (House of Aviz) to Philippa of Lancaster, daughter of John of Gaunt, 1st Duke of Lancaster.[1] With the victory at the Battle of Aljubarrota, assisted by English archers, John I was recognized as the undisputed King of Portugal, putting an end to the interregnum of the 1383–1385 Crisis.[1] The Treaty of Windsor established a pact of mutual support between the countries.[1]
| Signed | 1386 |
|---|---|
| Signatories |
Marriage of John I, King of Portugal and Philippa of Lancaster, daughter of John of Gaunt, 1st Duke of Lancaster.
This document is preserved at the Portuguese National Archives.[2]
Historian Matthew Winslett says, "This treaty has been the cornerstone of both nations' relations with each other ever since."[3]
Notes
- Livermore 1947, p. 179.
- "Tratado de paz, amizade e confederação entre D. João I e Eduardo II, rei de Inglaterra, denominado Tratado de Windsor" (in Portuguese). Portuguese National Archives Digital Collection. Retrieved 4 January 2013.
- Winslett 2008, p. 3.
References
- Livermore, H.V (1947). A History of Portugal. Cambridge University Press.CS1 maint: ref=harv (link)179
- Winslett, Matthew (2008). The Nadir of Alliance: The British Ultimatum of 1890 and Its Place in Anglo-Portuguese Relations, 1147--1945. University of Texas Arlington.CS1 maint: ref=harv (link)3
- Country profile of Portugal, Foreign and Commonwealth Office website
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