compiled by Susan Flantzer
© Unofficial Royalty 2023

On the side of his father, Grand Duke Henri of Luxembourg, Prince Guillaume has an impressive set of royal ancestors. Among his ancestors are Kings of Belgium, Denmark, Portugal, and Sweden, and of course rulers of the Principality of Luxembourg.

King Miguel I of Portugal and Princess Adelaide of Löwenstein-Wertheim-Rosenberg are Guillaume’s great-great-great-grandparents two times and also his great-great-great-great-grandparents. When Miguel’s father King João VI of Portugal died in 1826, his elder brother Pedro became King of Portugal.  Pedro was king for only two months, abdicating in favor of his daughter Queen Maria II.  Miguel served as regent for his niece Maria and then claimed the Portuguese throne in his own right in 1828. This led to a difficult political situation, during which many people were killed, imprisoned, persecuted, or sent into exile, finally culminating in the Portuguese Liberal Wars. Ultimately, Miguel was deposed in 1834 and lived the last 32 years of his life in exile in the Duchy of Baden.

Adelaide of Löwenstein-Wertheim-Rosenberg was never Queen of Portugal because she and Miguel did not marry until 1851. When Miguel died in 1866, all his children were under the age of fifteen.  Adelaide continued to raise their children and arranged some rather brilliant marriages for them despite their dubious status. Through the marriages of their many children and grandchildren, Miguel and Adelaide are the ancestors of the current monarchs of Belgium, Liechtenstein, and Luxembourg, as well as pretenders to the thrones of Austria, Bavaria, Italy, and Portugal.

Guillaume’s mother Grand Duchess Maria Teresa, was born Maria Teresa Mestre y Batista-Falla in Havana, Cuba. Her parents José Antonio Mestre y Álvarez and María Teresa Batista y Falla de Mestre were both from Cuban bourgeois families of Spanish descent.

Parents, Grandparents, Great-Grandparents, Great-Great-Grandparents, and Great-Great-Great-Grandparents of Prince Guillaume, Hereditary Grand Duke of Luxembourg (born November 11, 1981)

• Unofficial Royalty: Prince Guillaume, Hereditary Grand Duke of Luxembourg
• Unofficial Royalty: Grand Duchy of Luxembourg Index

The links below are from Unofficial Royalty,  Wikipedia, Leo’s Genealogics Website, The Peerage, or Geni.

Parents

• Grand Duke Henri of Luxembourg (1955)
• Maria Teresa Mestre y Batista-Falla (born 1956)

Grandparents

• Grand Duke Jean of Luxembourg (1921 – 2019)
• Princess Joséphine Charlotte of Belgium (1927 – 2005)
• José Antonio Mestre y Álvarez (1926 – 1993)
• María Teresa Batista y Falla de Mestre (1928 – 1988)

Great-Grandparents

• Prince Felix of Bourbon-Parma (1893 – 1970)
• Grand Duchess Charlotte of Luxembourg (1896 – 1985)
• Leopold III, King of the Belgians (1901 -1983)
• Princess Astrid of Sweden (1905 – 1935)
•  José Antonio Mestre y Ramos-Almeyda (1897 – 1961)
• María Narcisa Luisa Álvarez y Tabió (1900 – 1992)
• Agustín Batista y González de Mendoza (1899 – 1968)
• María Teresa Falla y Bonet (1928 – 1988)

Great-Great-Grandparents

• Roberto I, Duke of Parma (1848 – 1907)
• Infanta Maria Antonia of Portugal (1862 – 1959)
• Grand Duke Guillaume IV of Luxembourg (1852 – 1912)
• Infanta Maria Ana of Portugal (1861 – 1942)
• Albert I, King of the Belgians (1875 – 1934)
• Duchess Elisabeth in Bavaria (1876 – 1965)
• Prince Carl of Sweden, Duke of Västergötland (1861 – 1951)
• Princess Ingeborg of Denmark (1878 – 1958)
• Francisco Javier Mestre y Fernández-Criado (1859 – ?)
• Matilde Ramos-Almeyda y Gómez (1864 – 1948)
• Lucas Álvarez y Cerice (1868 – 1940)
• Narcisa María Tabió y de la Lanza (1878 – 1942)
• Melchor Batista y Varona (1859 – 1932)
• Julia González de Mendoza y Pedroso (1869 – 1934)
• Laureano Falla y Gutiérrez (1859 – 1929)
• María Dolores Bonet y Mora (1863 – 1949)

Great-Great-Great-Grandparents

• Carlo III, Duke of Parma (1823 – 1854)
• Princess Louise Marie Thérèse of Artois (1819 – 1864)
• King Miguel I of Portugal (1802 – 1866) (deposed before his marriage)
• Princess Adelaide of Löwenstein-Wertheim-Rosenberg (1831 – 1909)
• Grand Duke Adolphe of Luxembourg (1817 – 1905)
• Princess Adelheid-Marie of Anhalt-Dessau (1833 – 1916)
• King Miguel I of Portugal (1802 – 1866) (deposed before his marriage)
• Princess Adelaide of Löwenstein-Wertheim-Rosenberg (1831 – 1909)
• Prince Philippe of Belgium, Count of Flanders (1837 – 1905)
• Princess Marie of Hohenzollern-Sigmaringen (1845 – 1912)
• Duke Karl Theodor in Bavaria (1839 – 1909)
• Infanta Maria Josepha of Portugal (1857 – 1943)
• King Oscar II of Sweden (1829 – 1907)
• Princess Sophia of Nassau (1836 – 1913)
• King Frederik VIII of Denmark (1843 – 1912)
• Princess Louise of Sweden (1851 – 1926)
• Francisco Javier Mestre y Domínguez (1834 – ?)
• María Luisa Fernández-Criado y Gómez (1808 – 1869)
• José Benito Ramos-Almeyda y Marrero (? – ?)
• Matilde Gómez y Petit (?- ?)
• Lucas Alvarez y Guillén and (1833 – circa 1865)
• Águeda de la Encarnación Cerice y Lima (? – ?)
• Pablo Diego de Jesús Tabió y Rodríguez (circa 1846 – 1912)
• Rosa de la Lanza y Espinosa de los Monteros (circa 1850 – ?)
• Melchor Bonifacio Batista y Caballero (1813 – 1890)
• Irene de Varona y de la Torre (1823 – 1876)
• Antonio González de Mendoza y Bonilla (1828 – 1906)
• María de las Mercedes Pedroso y Montalvo (circa 1835 – 1895)
• Juan Manuel Falla y Gutiérrez (1825 – 1871)
• Isabella Juana Gutiérrez y Diego (1834 – 1890)
• Cristóbal Bonet y Pí (1817 – 1886)
• Maria Adelaida Mora y González de Avila (1839 – 1915)

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Sources:

• Family Tree and Family History at Geni
• Leo’s Genealogics Website
• The Peerage
• Wikipedia