Concord of Segovia

Summary

The Concord of Segovia was an agreement signed on 15 January 1475 in the Alcázar of Segovia by Isabella I of Castile and her husband Ferdinand II of Aragon, at the time King of Sicily and Prince of Girona. The pact regulated the joint government of the Crown of Castile following the contested accession of Isabella, and is regarded as a foundational instrument of the dynastic union of the crowns of Castile and Aragon that gave rise to the future Spanish Empire under the Catholic Monarchs.