Draft:List of coupled double first cousins

  • Comment: See WP:NLIST. Also, genealogyexplained.com is not a reliable source and need reliable sources that support those in the list meets the criteria. S0091 (talk) 20:26, 23 August 2024 (UTC)

OttoLouiseRichardBeatrice
ClaudetteHenryAlfredDorothy
EdwinFrances
Edwin and Frances are double first cousins because they share both sets of grandparents as they are cousins through both parents. They are cousins through the siblings Claudette and Alfred as well as the siblings Henry and Dorothy.

This is an incomplete list of notable individuals who have been maritally coupled with a double first cousin.[1]

When two siblings from one family marry two siblings from another family and both couples have children, the offspring of one marriage is double first cousin of the offspring of the other marriage. This results in double first cousins sharing both sets of grandparents.

Marriage between double first cousins is a rare occasion, being predominantly found within royalty. The possible offspring of these marriages has an inbreeding coefficient of at least 12.5% - the same as the offspring of uncle-niece / aunt-nephew and half brother-half sister relationships.

List

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Husband Wife Date of Marriage Shared Grandparents Offspring Ref(s)
Chikahito, Emperor Go-Reizei of Japan Princess Shōshi 1037 Emperor Ichijō and Empress Shōshi;

Fujiwara no Michinaga and Minamoto no Rinshi

Leo III of Armenia Agnes (Marie) de Lusignan 1305 Leo II, King of Armenia and Keran, Queen of Armenia;

Hugh III of Cyprus and Isabella of Ibelin, Queen of Cyprus and Jerusalem

Alfonso XI of Castile Maria of Portugal 24 June 1328 Sancho IV of Castile and María de Molina;

Denis of Portugal and Elizabeth of Aragon

Peter of Castile, Prince Fernando of Castile and one more son
Philip II of Spain Maria Manuela, Princess of Portugal 15 November 1543 Philip I of Castile and Joanna of Castile;

Manuel I of Portugal and Maria of Aragon, Queen of Portugal

Carlos, Prince of Asturias
João Manuel, Prince of Portugal Joanna of Austria, Princess of Portugal 11 January 1552 Philip I of Castile and Joanna of Castile;

Manuel I of Portugal and Maria of Aragon, Queen of Portugal

Sebastian I of Portugal
Ferdinand Charles, Archduke of Austria Anna de' Medici, Archduchess of Austria 10 June 1646 Charles II, Archduke of Austria and Maria Anna of Bavaria;

Ferdinando I de' Medici, Grand Duke of Tuscany and Christina of Lorraine

Claudia Felicitas of Austria, Maria Magdalena of Austria and one more daughter
Louis XIV of France Maria Theresa of Spain 9 June 1660 Henry IV of France and Marie de' Medici;

Philip III of Spain and Margaret of Austria, Queen of Spain

Louis, le Grand Dauphin, Anne Élisabeth, Marie Anne, Marie Thérèse, Philippe Charles, Duke of Anjou and Louis François, Duke of Anjou
Ludwig, Prince of Hohenlohe-Langenburg Countess Eleanor of Nassau-Saarbrücken 23 January 1723 Henry Frederick, Count of Hohenlohe-Langenburg and Countess Juliana Dorothea of Castell-Remlingen;

Gustav Adolph, Count of Nassau-Saarbrücken and Landgravine Eleonore Klara of Hohenlohe-Neuenstein

Christian Albrecht, Prince of Hohenlohe-Langenburg, Friedrich Karl, Sophie Henriette, Auguste Caroline, Luise Charlotte, Eleonore Juliane, Wilhelm Friedrich, Philipp Karl, Friedrich August, Ludwig Gottfried, Christiane Henriette, Caroline Christiane and Friedrich Ernst
Frederick William II of Prussia Elisabeth Christine of Brunswick-Wolfenbüttel, Crown Princess of Prussia 14 July 1765 Frederick William I of Prussia and Sophia Dorothea of Hanover;

Ferdinand Albert II, Duke of Brunswick-Wolfenbüttel and Princess Antoinette of Brunswick-Wolfenbüttel

Princess Frederica Charlotte
Ferdinand III, Grand Duke of Tuscany Princess Luisa of Naples and Sicily 15 August 1790 Francis I, Holy Roman Emperor and Maria Theresa;

Charles III of Spain and Maria Amalia of Saxony

Archduchess Carolina Ferdinanda Teresa, Archduke Francesco Leopoldo, Leopold II, Grand Duke of Tuscany, Archduchess Maria Luisa Giuseppa, Archduchess Maria Theresa and one stillborn son
Francis II, Holy Roman Emperor Maria Theresa of Naples and Sicily 15 September 1790 Francis I, Holy Roman Emperor and Maria Theresa;

Charles III of Spain and Maria Amalia of Saxony

Archduchess Maria Ludovika, Emperor Ferdinand I, Archduchess Marie Caroline, Archduchess Caroline Ludovika, Archduchess Caroline Josepha Leopoldine, Archduchess Maria Klementina, Archduke Joseph Franz Leopold, Archduchess Maria Karolina, Archduke Franz Karl, Archduchess Marie Anne, Archduke Johann Nepomuk and Archduchess Amalie Theresa
Francis I of the Two Sicilies Archduchess Maria Clementina of Austria 26 June 1797 Francis I, Holy Roman Emperor and Maria Theresa;

Charles III of Spain and Maria Amalia of Saxony

Maria Carolina, Ferdinando, Duke of Noto
Francisco de Asís, Duke of Cádiz Isabella II of Spain 10 October 1846 Charles IV of Spain and Maria Luisa of Parma;

Francis I of the Two Sicilies and María Isabella of Spain

Infante Luis Fernando, Infante Fernando Francisco, Infanta María Isabel, Infanta Maria Cristina, Infanta Margarita, Infante Francisco de Asís Fernando, Alfonso XII of Spain, Infanta Maria de la Conception, Infanta María del Pilar, Infanta María de la Paz, Infanta María Eulalia and Infante Francisco de Asis Leopoldo Maria Enrique

See also

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References

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  1. ^ "What are Double First Cousins?". genealogyexplained.com. Retrieved Aug 23, 2024.