Married Double First Cousin is in Married Relationships.
In 1328 Alfonso "Avenger" XI King Castile [aged 16] and Maria Burgundy Queen Consort Castile [aged 15] were married. She by marriage Queen Consort Castile. She the daughter of Alfonso "Brave" IV King Portugal [aged 36] and Beatrice Ivrea Queen Consort Portugal [aged 35]. He the son of Ferdinand IV King Castile IV King Leon and Constance Burgundy Queen Consort Castile Queen Consort Leon. They were double first cousins. He a great x 4 grandson of King Henry "Curtmantle" II of England. She a great x 4 granddaughter of King Henry "Curtmantle" II of England.
On 12th November 1543 Philip "The Prudent" II King Spain [aged 16] and Maria Aviz [aged 16] were married at Salamanca [Map]. She the daughter of John III King Portugal [aged 41] and Catherine of Austria Queen Consort Portugal [aged 36]. He the son of Charles V Holy Roman Emperor [aged 43] and Isabel Aviz Queen Consort Spain. They were double first cousins. He a great x 5 grandson of King Edward III of England. She a great x 5 granddaughter of King Edward III of England.
In 1552 John Manuel Aviz Prince Portugal [aged 14] and Joanna of Austria Princess Portugal [aged 16] were married. She the daughter of Charles V Holy Roman Emperor [aged 51] and Isabel Aviz Queen Consort Spain. He the son of John III King Portugal [aged 49] and Catherine of Austria Queen Consort Portugal [aged 44]. They were double first cousins. He a great x 5 grandson of King Edward III of England. She a great x 5 granddaughter of King Edward III of England.
In 1660 Louis "Sun King" XIV King France [aged 21] and Maria Theresa of Spain Queen Consort France [aged 21] were married. She by marriage Queen Consort of France. She the daughter of Philip IV King Spain [aged 54] and Elisabeth Bourbon Queen Consort Spain. He the son of Louis XIII King France and Anne of Austria Spain Queen Consort France [aged 58]. They were double first cousins.
On 15th September 1790 Francis Lorraine II Holy Roman Emperor [aged 22] and Maria Theresa of Naples and Sicily [aged 18] were married. They were double first cousins. He a great x 5 grandson of King James I of England and Ireland and VI of Scotland. She a great x 5 granddaughter of King James I of England and Ireland and VI of Scotland.