Ferdinand I of Portugal: Biography, Facts and Career

Ferdinand I (Portuguese: Fernando; 31 October 1345 – 22 October 1383), sometimes called the Handsome (o Formoso) or occasionally the Inconstant (o Inconstante), was the King of Portugal from 1367 until his death in 1383. He was also briefly made King of Galicia, in 1369 (a claim which he would maintain until 1373). Facing a lack of legitimate male heirs, his death led to the 1383–85 crisis, also known as the Portuguese interregnum.

== Life == Ferdinand was born in Coimbra, the second but eldest surviving son of Peter I and his wife, Constanza Manuel. On the death of Peter of Castile in 1369, Ferdinand, as great-grandson of Sancho IV by his grandmother Beatrice, laid claim to the vacant Castilian throne. The kings of Aragon and Navarre, and later John of Gaunt, Duke of Lancaster, who had married Peter of Castile's eldest daughter, Constance, also claimed the throne. The throne was held by his second cousin Henry of Trastámara (Henry II of Castile), Peter of Castile's illegitimate brother, who had defeated him in the Castilian Civil War in 1366 and assumed the crown. After one or two indecisive campaigns, all parties were ready to accept the mediation of Pope Gregory XI. The conditions...

Quick facts about Ferdinand I of Portugal

• Full name: Ferdinand I of Portugal
• Born: 1345-10-31
• Nationality: Kingdom of Portugal
• Known as: Royal
• Wikidata ID: Q108442

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