Ferdinand I' (Fernando, Portuguese pronunciation: [fɨɾˈnɐ̃du]; Lisbon, 31 October 1345 – 22 October 1383 in Lisbon), sometimes referred to as the Handsome (Portuguese: o Formoso) or rarely as the Inconstant (Portuguese: o Inconstante), was the ninth King of Portugal and the Algarve, the second (but eldest surviving) son of Peter I and his wife, Constance of Castile. He succeeded his father in 1367.
On the death of Peter of Castile in 1369, Ferdin...
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Ferdinand I' (Fernando, Portuguese pronunciation: [fɨɾˈnɐ̃du]; Lisbon, 31 October 1345 – 22 October 1383 in Lisbon), sometimes referred to as the Handsome (Portuguese: o Formoso) or rarely as the Inconstant (Portuguese: o Inconstante), was the ninth King of Portugal and the Algarve, the second (but eldest surviving) son of Peter I and his wife, Constance of Castile. He succeeded his father in 1367.
On the death of Peter of Castile in 1369, Ferdinand, as great-grandson of Sancho IV by the female line, laid claim to the vacant throne, for which the kings of Aragon and Navarre, and afterwards John of Gaunt, duke of Lancaster (married in 1370 to Constance, the eldest daughter of Peter), also became competitors.
Meanwhile Henry II of Castile, Peter's illegitimate brother, who had defeated Peter, assumed his crown and took the field. After one or two indecisive campaigns, all parties were ready to accept the mediation of Pope Gregory XI. The conditions of the treaty, ratified in 1371,...
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