| Roman Catholicism|
| Heir apparent|
House of Nassau-Weilburg
| 11 November 1981 (age 34)
Luxembourg (1981-11-11) |
Henri, Grand Duke of Luxembourg
Maria Teresa, Grand Duchess of Luxembourg
Stephanie, Hereditary Grand Duchess of Luxembourg (m. 2012)
Henri, Grand Duke of Luxembourg, Maria Teresa, Grand Duchess of Luxembourg
Prince Felix of Luxembourg
Archduke Imre Emanuel Simeon Jean Carl Marcus d'Aviano of Austria
Stephanie - Hereditary Grand Du, Henri - Grand Duke of L, Maria Teresa - Grand Du, Prince Felix of Luxembourg, Princess Alexandra of Luxem
Guillaume, Hereditary Grand Duke of Luxembourg Wikipedia
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.
Prince Guillaume was born in 11 November 1981 at the Grand Duchess Charlotte Maternity Hospital in Luxembourg City 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. His godparents are Princess Marie Astrid of Luxembourg and 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.
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 (English: William) V. He has been honorary chairman of the Board of Economic Development of Luxembourg since 2001. He was formerly active with the Kraizberg Foundation, a charitable institution for the disabled.
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. 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.
The civil wedding took place on Friday, 19 October 2012; the religious wedding took place on Saturday, 20 October 2012 at the Notre-Dame Cathedral.
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.11 November 1981 – 28 July 1986: His Royal Highness Prince Guillaume of Luxembourg, Prince of Nassau, Prince of Bourbon-Parma
28 July 1986 – 18 December 2000: His Royal Highness Prince Guillaume of Luxembourg, Prince of Nassau
18 December 2000 – present: His Royal Highness The Hereditary Grand Duke of Luxembourg
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.Knight of the Order of the Gold Lion of the House of Nassau (11 November 1981)
Grand Cross of Order of Adolphe of Nassau (11 November 1981)
Grand Cross of Order of the Oak Crown (23 June 2012)
Italy: Knight Grand Cross of the Order of Merit of the Italian Republic (30 January 2009)
Netherlands: Knight Grand Cross of the Order of Orange-Nassau (21 March 2012)
Portugal: Grand Cross of the Order of Aviz (23 May 2017)
Slovakia: Grand Officer of the Order of the White Double Cross (7 September 2005)