- In 1384, in a bid for the crown of Portugal, Juan I of Castile laid a siege to the city of Lisbon, which lasted nearly four months. Juan I was married to Beatriz, the heir of the deceased King Fernando of Portugal.
- Fernão Lopes decribes the heroic resistance of the people of Lisbon, including many incidents indicating that God was on the side of the Portuguese. The city itself becomes a character in his Chronicle of King john I, Part 1.
- Only Castilians die of the plague.
- The Queen of Castile cought the plague, which was taken as one more sign that the King of Castile should .lift the siege and return home.
- The King of Castile leaves, but with the intention of returning once again with a great army. This forecasts the Battle of Aljubarrota in 1385.
Not to Scale