 The crown of Aragon he inherited in 1479 included the kingdoms of Majorca, Sardinia, Sicily, and Valencia, as well as the Principality of Catalonia.In 1469, he married Infanta Isabella, the future queen of Castile, which was regarded as the marital and political "cornerstone in the foundation of the Spanish monarchy".As a consequence of the marriage, in 1474 he became "de jure uxoris" King of Castile as Ferdinand V, when Isabella held the crown of Castile, until her death in 1504.