Isabella I of Castile
Isabella I (Spanish: Isabel I, 22 April 1451 – 26 November 1504) was Queen of Castile from 1474 and Queen consort of Aragon from 1479, reigning over a dynastically unified Spain jointly with her husband Ferdinand II. Isabella is considered the first Queen of Spain de facto, being described as such during her own lifetime, although Castile and Aragon de jure remained two different kingdoms until the Nueva Planta Decrees of 1714.
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