|Hereditary Grand Duke of Luxembourg (more)|
|Born||Prince Guillaume of Luxemburg|
11 November 1981
Grand Duchess Charlotte Maternity Hospital, Luxembourg City, Luxembourg
|Father||Henri, Grand Duke of Luxembourg|
|Mother||María Teresa Mestre y Batista|
|*Is a prince/ss of Nassau but not a prince/ss of Luxembourg|
Prince Guillaume was born on 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; Swiss boarding schools the Institut Le Rosey and the Collège Alpin International Beau Soleil where he finished the French baccalaureate in 2001; 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. From 2018 until 2019, Prince Guillaume attended a postgraduate training at the Royal College of Defense Studies (RCDS) in London.
The Hereditary Grand Duke completed internships at the Belgian Chemical Union in 2003, at the Deutsche Bank in London in 2004, and at the Spanish branch of ArcelorMittal in 2005. Sworn in December 2002 as an officer in the Luxembourg Army, Prince Guillaume holds the rank of Colonel.
Guillaume became the honorary chairman of the Board of Economic Development of the Grand Duchy of Luxembourg, an agency for economic promotion and development, since March 2001. He is also a member of the Council of State since June 24, 2005. He attended the Millennium Conference at the United Nations headquarters in New York City in 2005. Prince Guillaume also work at the European Commission and the Permanent Representation of Luxembourg to the European Union in Brussels in 2012.
The Hereditary Grand Duke is patron to the Luxembourg Cycling Sport Federation, Youth Hostels Central, National Association of Road Victims, Chamber Orchestra of Luxembourg, Youth Harmony Orchestra of the European Union, as well as to Young Entrepreneurs Luxembourg and Special Olympics Luxembourg Associations.
During the summer of 1997, Guillaume participated as a member of Luxembourg Scout Movement in a humanitarian camp in Nepal. He involved in a reforestation project and other actions for the benefit of the less favored communities. In 2017, the Hereditary Grand Duke joined the board of directors of the World Scout Foundation to support the development of scouting around the world.
In 1999, he participated in a charitable mission in Aguascalientes to provide the educational and social assistance to young people in one of the most deprived areas in Mexico. After having chaired for more than 10 years (2000-2011) in Kräizbierg Foundation, which works for people with disabilities; the Hereditary Grand Duke accepted the title of honorary president in March 2011.
Since 18 January 2016, the Hereditary Grand Duke has also been a member of the board of directors of Europäische Stiftung Kaiserdom zu Speyer Foundation. He is also a member of the board of directors of the Fondation du Grand-Duc et de la Grande-Duchesse.
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 Guillaume's father and Stéphanie are 7th cousins; thus Guillaume is Stéphanie's 7th cousin once removed.
Guillaume and Stéphanie have a son, named Prince Charles, born on 10 May 2020 at Grand Duchess Charlotte Maternity Hospital in Luxembourg. He is second in the line of succession to the throne of Luxembourg.
Guillaume is interested in music and sports; he plays the piano and enjoys football, swimming and volleyball. He speaks Luxembourgish, French, German, Spanish and English. He regularly represents his parents in many foreign activities.
The Hereditary Grand Duke of Luxembourg
|Reference style||His Royal Highness|
|Spoken style||Your Royal Highness|
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.
Prince Guillaume attended primary school in Lorentzweiler and continued his education in the Lycée Robert Schuman until the fourth year of Luxembourgish secondary education. Then he pursued his studies at the Le Rosey Institute and at the Collège Beausoleil in the Swiss Alps, where he passed his French Baccalaureate in 2001. From September 2001 until August 2002, the Hereditary Grand Duke accomplished his Officer training at the Sandhurst Royal Military Academy in the United Kingdom....In 2009, the Hereditary Grand Duke graduated with honours with a Bachelor's degree in Humanities and Languages, specialising in Political Science, at the University of Angers (France).
After his military training at the Royal Military Academy Sandhurst, Guillaume studied history and politics at the University of Durham, at Brunel University in London and at the University of Angers in France.