Guillaume, Hereditary Grand Duke of Luxembourg

Hereditary Grand Duke of Luxembourg (more)

The Hereditary Grand Duke in 2013
Born (1981-11-11) 11 November 1981
Grand Duchess Charlotte Maternity Hospital, Luxembourg, Luxembourg
Spouse Countess Stephanie de Lannoy (m. 2012)
Full name
Guillaume Jean Joseph Marie
House Nassau-Weilburg
Father Henri, Grand Duke of Luxembourg
Mother Maria Teresa, Grand Duchess of Luxembourg
Religion Roman Catholicism

Prince Guillaume, Hereditary Grand Duke of Luxembourg (given names: Guillaume Jean Joseph Marie; born 11 November 1981), has been heir apparent to the crown of Luxembourg since his father's accession in 2000.

Early life and education

Prince Guillaume was born in 11 November 1981 at the Grand Duchess Charlotte Maternity Hospital[1] in Luxembourg and is the eldest child of Grand Duke Henri of Luxembourg and his wife, Cuban-born Grand Duchess Maria Teresa. He was named after his father's youngest brother Prince Guillaume of Luxembourg. Guillaume has four younger siblings: Prince Félix, Prince Louis, Princess Alexandra and Prince Sébastien.

Guillaume's education includes Lycée Robert-Schumann in Luxembourg; Collège Alpin International Beau Soleil and Institut Le Rosey boarding schools in Switzerland; and Royal Military Academy Sandhurst, Camberley, England. He began his higher education studies in the United Kingdom where he studied at University College, Durham and Brunel University, both in England. In 2006 he entered Institut Philanthropos in Fribourg, Switzerland, where he spent a year studying philosophy and anthropology. He later studied letters and political science at the Institut Albert-le-Grand in Angers, receiving his bachelor's degree with honors in 2009. His degree was issued by Université d'Angers, as a result of a partnership agreement between the two schools.[2][3]

Hereditary Grand Duke

Guillaume has been heir apparent to the crown of Luxembourg since his father's accession in 2000. If he succeeds to the grand ducal throne, he will reign as the fifth of his name, Guillaume V. He has been honorary chairman of the Board of Economic Development of Luxembourg since 2001.[4] He was formerly active with the Kraizberg Foundation, a charitable institution for the disabled.

Personal life

At the occasion of his 30th birthday, he gave interviews during which stated that he was in a relationship with a "dear miss" that had been going strong for more than a year but insisted that they need some more time to evaluate their possible future. On 26 April 2012, the court announced the engagement of the Hereditary Grand Duke to the Belgian Countess Stéphanie de Lannoy.[5] The civil wedding took place on Friday, 19 October 2012; the religious wedding took place on Saturday, 20 October 2012.[6]

Guillaume is interested in music and sports; he plays piano and enjoys football, swimming and volleyball. He speaks Luxembourgish, French, German, Spanish and English. He regularly represents his parents in many foreign activities.

Guillaume and Stéphanie share a common descent from Charles Marie, Prince & 5th Duke d’Arenberg, which means that Guillame's father and Stéphanie are 7th cousins; thus Guillaume is Stéphanie's 7th cousin once removed.

Titles and style

Styles of
The Hereditary Grand Duke of Luxembourg
Reference style His Royal Highness
Spoken style Your Royal Highness
Alternative style Sir

His style and title in full is: His Royal Highness Prince Guillaume Jean Joseph Marie, Hereditary Grand-Duke of Luxembourg, Hereditary Prince of Nassau, Prince of Bourbon-Parma.[9]

Honours and awards

National honours

Foreign honours


Patrilineal descent

See also


  1. Le Grand-Duc héritier – Official website of the Grand Ducal Palace
  2. Blog about Guillaume's education and experience.
  3. Royal news blog about Guillaume's graduation
  4. Godmother. 11 November 2011. "HRH Prince Guillaume Jean Joseph Marie, Hereditary Grand Duke of Luxembourg."
  5. "Guillaume et Stéphanie se financent demain". Retrieved 26 April 2012.
  6. Noblesse et Royautés, "Mariage princier au Luxembourg : 20 octobre 2012"
  7. In 1986, Grand Duke Jean renounced the title Prince/Princesse de Bourbon de Parme for himself and his family, when his eldest son, then-Hereditary Grand Duke Henri married Maria-Theresa Mestre. The reason for this was that the Duke of Parma, Carlos Hugo, ruled the marriage unequal in 1981, as well as the marriage of Prince Jean to Hélène Suzanna Vestur in 1987, for which he had renounced his rights to Luxembourg in 1986.
  8. The Arrêté Grand-Ducal of 21 Septembre 1995 established that the title of Prince/Princesse de Luxembourg is reserved for the children of the sovereign and the heir to the throne. It also stated that the descendants in male lineage of the sovereign should be styled as Prince/Princesse de Nassau with qualification of Altesse Royale.
  9. Actualités: S.A.R le Prince Guillaume devient le Grand-Duc Héritier – Official website of the Luxembourg Government
  10. "Honorary distinctions of the Grand Duchy of Luxembourg" (PDF). Service Information et Presse. Retrieved 2007-09-21.
  11. Honorary distinctions of the Grand Duchy of Luxembourg, publication of the government of Luxembourg : Princes and Princesses of the Grand-Ducal House of Luxembourg are Grand Crosses of the Order by birth but the decoration is worm only after they reach their majority (18 years old)
  12. Noblesse et Royautés, National Day of Luxembourg 2012, Photo
  13. "Noblesse et Royautes" website, State visit of Italian President Napolitano in Luxembourg, february 2009
  14. Tom Wagner, Photo gallery of gala diner : [Good photo of Guillaume] showing decoration details
  15. Photo during state visit of the Queen of the Netherlands in Luxembourg (03/2012)
  16. Slovak republic website, State honours (click on "Holders of the Order of the 2nd Class White Double Cross" to see the holders' table) : 2nd Class received by Hereditary Grand-Duke in 2005, i.e. during the state visit (French) of Grand-Duke, Grand-Duchess & Hereditary Grand-Duke in Slovakia (7 September 2005).
Wikimedia Commons has media related to Guillaume, Hereditary Grand Duke of Luxembourg.
Guillaume, Hereditary Grand Duke of Luxembourg
Born: 11 November 1981
Lines of succession
First in line Line of succession to the Luxembourger throne Succeeded by
Prince Félix of Luxembourg
Preceded by
Henri, Grand Duke
of Luxembourg
Line of succession to
the French throne (Legitimist)

44th position
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