Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Juan Carlos I is the current King of Spain. On 22 November 1975, two days after General Francisco Franco's death, Juan Carlos was designated King according to the law of succession promulgated by Franco. In 1969, when Franco named Juan Carlos as the next head of state, no monarch had reigned in Spain for 38 years. The Spanish Constitution of 1978, voted in referendum, acknowledges him expressly as King of Spain. Learn more about Juan Carlos I the current King of Spain, his family and its history in this book.