Juan Carlos spent his early years in Italy and came to Spain in 1947 to continue his studies. After completing his secondary education in 1955, he began his military training and entered the General Military Academy at Zaragoza. Later, he attended the Naval Military School and the General Academy of the Air, and finished his tertiary education at the University of Madrid. In 1962, Juan Carlos married Princess Sophia of Greece and Denmark in Athens. The couple had two daughters and a son together: Elena, Cristina, and Felipe. Due to Franco's declining health, Juan Carlos first began periodically acting as Spain's head of state in the summer of 1974. Franco died in November the following year and Juan Carlos became king on 22 November 1975, two days after Franco's death, the first reigning monarch since 1931; although his exiled father did not formally renounce his claims to the throne in favor of his son until 1977.