Guillaume, Hereditary Grand Duke of Luxembourg

Prince Guillaume, Hereditary Grand Duke of Luxembourg (Guillaume Jean Joseph Marie; born 11 November 1981), is the heir apparent to the crown of Luxembourg since his father's became grand duke in 2000.

Prince Guillaume
Hereditary Grand Duke of Luxembourg (more)
The Hereditary Grand Duke in 2013
Born	(1981-11-11) 11 November 1981 (age 43) Grand Duchess Charlotte Maternity Hospital, Luxembourg City, Luxembourg
Spouse	Countess Stéphanie de Lannoy ​ ​ (m. 2012)​
Issue	Prince Charles of Luxembourg Prince Francois of Luxembourg
Full name Guillaume Jean Joseph Marie
House	Luxembourg-Nassau (official) Bourbon-Parma (agnatic)
Father	Henri, Grand Duke of Luxembourg
Mother	María Teresa Mestre y Batista
Religion	Roman Catholicism

Early Life and Education

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. His godparents are Princess Marie Astrid of Luxembourg and Prince Guillaume of Luxembourg. Guillaume has four younger siblings: Prince Felix, Prince Louis, Princess Alexandra and Prince Sebastien.

On 26 April 2012, the court announced the engagement of the Hereditary Grand Duke to the Belgian Countess Stéphanie de Lannoy.^[1] They were married on 19 October 2012.^[2]

Guillaume and Stéphanie have a son, named Prince Charles of Luxembourg born on 10 May 2020 at the Grand Duchess Charlotte Maternity Hospital, Luxembourg^[3] Prince Francois of Luxembourg born on March 27 2023 at Grand Duchess Charlotte Maternity Hospital, Luxembourg City.

Titles

11 November 1981 — 18 December 2000: His Royal Highness Prince Guillaume of Luxembourg Prince of Nassau, Prince of Bourbon-Parma

18 December 2000 — present: His Royal Highness Prince Guillaume of Luxembourg, The Hereditary Grand Duke of Luxembourg, Prince of Nassau, Prince of Bourbon-Parma

Honors

National Honors

• 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 the Order of the Oak Crown (23 June 2012)

Foreign Honors

• Belgium: Grand Cross of the Order of the Crown

• France: Grand Officer of the Order of the Legion of Honor

• Italy: Knight Grand Cross of the Order of Merit of the Italian Republic

• Netherlands: Knight Grand Cross of the Order of Orange-Nassau, Recipient of the King Willem-Alexander Inauguration Medal (4/30/2013)

• Portugal: Grand Cross of the Order of Aviz (23 May 2017)

• Senegal: Commander of the National Order of the Lion (24 February 2023)

• Slovakia: Grand Officer of the Order of the White Double Cross

• United Kingdom: Recipient of the Sandhurst Medal (22 September 2020)