PORTUGAL - MAY 13: Prince DON JUAN CARLOS in his private study in exile in Portugal. He is expected to be a King of Spain. 13.05.1955In accordance between DON JUAN and General FRANCO, seventeen year old DON JUAN CARLOS, grandson of the late King ALFONSO, is being educated in a Spanish military Academy in preparation for the day on which he is to recognised as King of Spain. (Photo by Keystone-France/Gamma-Keystone via Getty Images)
