An interregnum and a war of succession began in the Kingdom of Portugal in 1383 when King Ferdinand I died leaving no sons and ended when King John I was crowned in 1385 after his victory during the B
The Battle of Aljubarrota by Jean de Wavrin
The Siege of Lisbon in the Chronicles of Jean Froissart
Treaty of Windsor (1386)
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The Treaty of Windsor is a diplomatic alliance signed between the Kingdom of Portugal and the Kingdom of England on 24 February 1387 in Windsor, Berkshire, and sealed by the marriage of King John I of
The Treaty of Windsor in the Portuguese National Archives
The Treaty in the National Archives, United Kingdom