Juan Carlos I Siblings: All About Infante Alfonso and Infanta Pilar, Duchess of Badajoz

Juan Carlos I, born Juan Carlos Alfonso Víctor María de Borbón y Borbón-Dos Sicilias on 5 January 1938 in Rome, Italy, is the former King of Spain who reigned from 22 November 1975 until his abdication on 18 June 2014.He is the son of Infante Juan, Count of Barcelona, and Princess María de las Mercedes of Bourbon-Two Sicilies, and the grandson of the last reigning king before the Second Republic, Alfonso XIII.