Ferdinand I of Portugal

Born

October 31, 1345

Died

October 22, 1383 (aged 37)

Known as

monarch

Ferdinand I, sometimes called the Handsome or occasionally the Inconstant, was the King of Portugal from 1367 until his death in 1383. He was also briefly made King of Galicia, in 1369. Facing a lack of legitimate male heirs, his death led to the 1383–85 crisis, also known as the Portuguese interregnum.

Biography from Wikipedia, available under CC BY-SA 4.0.