Duke of Medinaceli

Duke of Medinaceli (pronounced) is a hereditary title in the peerage of Spain, accompanied by the dignity of Grandee. The Catholic Monarchs, Ferdinand II of Aragon and Isabella I of Castile, created the title and awarded it on 31 October 1479 to Luis de la Cerda y de la Vega. He also held the title of 5th Count of Medinaceli, which was first awarded in 1368 to his ancestor, Bernal de Foix.