King John I of Portugal makes a vow to the Virgin Mary that if he wins the Battle of Aljubarrota (1385) against Castille, he will build a monastery on that site to thank her aid (the future Monastery of Batalha).
<bdi><a href="https://www.wikidata.org/wiki/Q20046002" class="extiw" title="d:Q20046002"><span title="Portuguese painter">Friar Manuel dos Reis</span></a>
</bdi>
Museu Alberto Sampaio