

“For Spain, always for Spain, everything for Spain. Long live Spain. Long live the King.” —The Count of Barcelona transferring all his claims to the Throne to his son, King Juan Carlos. La Zarzuela Palace, May 14,1977.
The King allowed his father to use the title Count of Barcelona for the rest of his life (It is not a noble title but one that belongs to the King of Spain) and has decided that he will be entombed, under the name of Juan III in the Pantheon of the Kings in El Escorial. Only the Sovereign and the Queen or King consort mother (or father) of the next Sovereign are buried in this Pantheon.
Wedding of infanta Margarita of Spain with Carlos Zurita y Delgado, 1972.
Margarita is blind since her birth.

Genealogical tree of the Kings of Spain, from the first Christian Visigoths Kings in the 7th century AD (although Hispania had been under Visigoth rule since the Vth century AD) to the current King and his Family, including his heirs, the Prince of Asturias and the Infanta Leonor.
(Go to the source for a readable version)
(Source: commons.wikimedia.org)

Juan Carlos I of Spain-75 Years, 75 Photos.
51- Wedding of the Duke and Duchess of Kent, May 1961. During the celebrations of this wedding Prince Juan Carlos and Princess Sophia, who had flirted in Rome at the 1960 summer Olympics, began their relationship.
Photo: The royals leaving the Cathedral. After the British Queen, the Duke of Edinburgh and Prince Charles, Queen Victoria Eugenia accompanies the Queen Mother. Behind the Gloucesters, the Count of Barcelona and Prince Juan Carlos escort the Princess Royal, and behind them, Princess Sophia and her brother.

Juan Carlos I of Spain-75 Years, 75 Photos.
50- Wedding of the Duke and Duchess of Kent, May 1961. During the celebrations of this wedding Prince Juan Carlos and Princess Sophia, who had flirted in Rome at the 1960 summer Olympics, began their relationship.
Photo: Queen Ena (first row, fourth from the right) between Britain’s Queen Mother and Princess Marina, Dowager Duchess of Kent. Behind her, in the second row her son and grandson, the Count of Barcelona and Don Juan Carlos with the Crown Prince of Greece and his sister Sophia.
Four generations of wedding menus:
King Alfonso XIII and Princess Victoria Eugenie of Battenberg (Madrid, 1906):
Don Juan and Doña María (Rome, 1935):
Prince Juan Carlos and Princess Sophia (Athens, 1962):
Prince Felipe and Doña Letizia (Madrid, 2004):
Doña Elena and Don Jaime Marichalar (Seville, 1995)
Infanta Cristina and Don Iñaki Urdangarín (Barcelona, 1997)

Juan Carlos I of Spain-75 Years, 75 Photos.
43- The Count of Barcelona transfers all his claims to the Throne to his son, King Juan Carlos at La Zarzuela Palace in the presence of his family. May 14, 1977.