In 1570 Philip "The Prudent" II King Spain (age 42) and Anna of Austria Queen Consort Spain (age 20) were married. She by marriage Queen Consort Spain. The difference in their ages was 22 years. She the daughter of Maximilian Habsburg Spain II Holy Roman Emperor (age 42) and Maria of Spain Holy Roman Empress (age 41). He the son of Charles V Holy Roman Emperor and Isabel Aviz Queen Consort Spain. They were uncle and niece. He a great x 5 grandson of King Edward III of England.

On 18 Apr 1599 Philip III King Spain (age 21) and Margaret of Austria Queen Consort Spain (age 14) were married. She by marriage Queen Consort Spain. He the son of Philip "The Prudent" II King Spain and Anna of Austria Queen Consort Spain. They were first cousin once removed.

In 1610 Philip IV King Spain (age 4) and Elisabeth Bourbon Queen Consort Spain (age 7) were married. She by marriage Queen Consort Spain. She the daughter of Henry IV King France (age 56) and Marie de Medici Queen Consort France (age 34). He the son of Philip III King Spain (age 31) and Margaret of Austria Queen Consort Spain (age 25). They were second cousins.

In 1649 Philip IV King Spain (age 43) and Mariana of Austria Queen Consort Spain (age 14) were married. She by marriage Queen Consort Spain. The difference in their ages was 29 years. She the daughter of Ferdinand King Bohemia III Holy Roman Emperor (age 40) and Maria Anna of Spain Holy Roman Empress. He the son of Philip III King Spain and Margaret of Austria Queen Consort Spain. They were uncle and niece.

In Nov 1679 Charles "Bewitched" II King Spain (age 17) and Marie Louise Bourbon Queen Consort Spain (age 17) were married. She by marriage Queen Consort Spain. She the daughter of Philip Bourbon I Duke Orléans (age 39) and Princess Henrietta Stewart Duchess Orléans (age 35). He the son of Philip IV King Spain and Mariana of Austria Queen Consort Spain (age 44). They were first cousin once removed. She a granddaughter of King Charles I of England, Scotland and Ireland.

In Aug 1689 Charles "Bewitched" II King Spain (age 27) and Maria Anna Neuburg Queen Consort Spain (age 21) were married. She by marriage Queen Consort Spain. He the son of Philip IV King Spain and Mariana of Austria Queen Consort Spain (age 54). They were third cousin once removed.

In 1829 Ferdinand VII King Spain (age 44) and Maria Christina of the Two Sicilies Queen Consort Spain (age 22) were married. She by marriage Queen Consort Spain. The difference in their ages was 21 years. He the son of Charles IV King Spain and Maria Luisa of Parma. They were uncle and niece. He a great x 5 grandson of King Charles I of England, Scotland and Ireland.

On 23 Jan 1878 Alfonso XII King Spain (age 20) and Maria de las Mercedes Unknown Queen Consort Spain (age 17) were married. She by marriage Queen Consort Spain. She the daughter of Antoine Orléans Duke Montpensier (age 53) and Infanta Luisa Fernanda Duchess of Montpensier (age 45). He the son of Francisco de Asís King Consort Spain (age 55) and Isabella II Queen Spain (age 47). They were half first cousins.

On 29 Nov 1879 Alfonso XII King Spain (age 22) and Maria Christina of Austria Queen Consort Spain (age 21) were married at Madrid. She by marriage Queen Consort Spain. He the son of Francisco de Asís King Consort Spain (age 57) and Isabella II Queen Spain (age 49). They were third cousins.

In 1906 Alfonso XIII King Spain (age 19) and Victoria Eugénie Mountbatten Queen Consort Spain (age 18) were married. She by marriage Queen Consort Spain. He the son of Alfonso XII King Spain and Maria Christina of Austria Queen Consort Spain (age 47). She a granddaughter of Queen Victoria of the United Kingdom.

In 1962 Juan Carlos I King Spain (age 23) and Sophia Glücksburg Queen Consort Spain (age 24) were married. She by marriage Queen Consort Spain. She the daughter of Paul I King Greece (age 60) and Frederica Hanover Queen Consort Greece (age 44). They were third cousins. He a great x 2 grandson of Queen Victoria of the United Kingdom. She a great x 2 granddaughter of Queen Victoria of the United Kingdom.