Ferdinand I of Portugal
King of Portugal during succession crisis

Born
1345
680 years ago
Died
October 22nd, 1383
641 years ago — 38 years old
Category
Leaders & Politicians
Country
Portugal
Links & References
Ruled as king of Portugal from 1367 until death in 1383. His reign faced significant challenges, particularly regarding the crown's succession. His marriage to Queen Leonor of Aragon intended to strengthen alliances but did not produce a male heir. The lack of a direct successor sparked the 1383-1385 Crisis, leading to conflicts with Castile. The crisis culminated in a pivotal battle at Aljubarrota, where Portuguese forces secured independence from Castile. Ferdinand I’s death led to a power struggle, ultimately resulting in the ascension of John I of Portugal, marking a significant turning point in the kingdom's history.
His marriage to Queen Leonor of Aragon
Death leading to the 1383-1385 Crisis
The Battle of Aljubarrota
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