Ancestors of Prince Guillaume, Hereditary Grand Duke of Luxembourg

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)

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

Parents

Grandparents

Great-Grandparents

Great-Great-Grandparents

Great-Great-Great-Grandparents

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