← Explore on the interactive map

Ferdinand's War

Type Event Region Portugal Time 1371–1373

After Pedro I of Castile was murdered in 1369, Portugal's Ferdinand I claimed the Castilian throne in the name of his wife Constance, Pedro's illegit…

Timeline

  1. 1371Alcoutim · AlgarveThe first Ferdinand's War ended with the Treaty of Alcoutim in 1371, mediated by Pope Gregory XI. Ferdinand I recognized Henry II as the lawful monarch of Castile and agreed to marry Henry's daughter Leonor, temporarily abandoning his open claim to the Castilian throne.
  2. 1372–1373Lisbon · PortugalFerdinand I broke the Treaty of Alcoutim, allying with John of Gaunt of England in 1372 to challenge Henry II again. A Castilian-French coalition invaded Portugal and besieged Lisbon. In 1373 Ferdinand was forced to sign the Treaty of Santarém, abandoning the English alliance and accepting Henry II's terms in exchange for a Castilian withdrawal.

Sources