Prince Jean of Luxembourg

Prince Jean of Luxembourg
Prince Jean
Spouse Hélène Suzanna Vestur (1987–2004)
Diane De Guerre (2009–)
Princess Marie-Gabrielle of Nassau
Prince Constantin
Prince Wenceslas
Prince Carl-Johan
Father Jean, Grand Duke of Luxembourg
Mother Joséphine-Charlotte of Belgium
Born 15 May 1957 (1957-05-15) (age 54)
Grand Ducal Family of Luxembourg
Greater coat of arms of the grand-duke of Luxembourg(2000).svg

HRH Grand Duke Jean

  • HRH The Dowager Duchess of Hohenberg
  • HRH Princess Marie Gabriele
  • HRH Princess Joan
    • HRH Princess Charlotte
    • HRH Prince Robert
      HRH Princess Julie
      • HRH Princess Charlotte
      • HRH Prince Alexandre
      • HRH Prince Frederik
  • HRH The Dowager Princess of Ligne
v · d · e

Prince Jean of Luxembourg (Given names: Jean Félix Marie Guillaume) was born on 15 May 1957 at Betzdorf Castle, the second son of Jean, Grand Duke of Luxembourg and Princess Joséphine-Charlotte of Belgium. He is the twin brother of Princess Margaretha. His godparents are Prince Felix of Luxembourg and Princess Margrethe of Denmark. He frequently goes by the name of Jean Nassau.

On 26 September 1986, Prince Jean renounced his right of succession to the Luxembourg throne.



Education and youth

Prince Jean was educated in Luxembourg, Switzerland and France, where he obtained his baccalaureate. He then undertook a language course at he Bell School of Languages in Cambridge England.

In 1977, Prince Jean began his military officer training at the Royal Military Academy, Sandhurst, England and member of the Champion Platoon, he was commissioned in August 1978, . He was made a captain of the Luxembourg Army in 1979. After completing his University in Geneva, he went to New York and joined W.R. Grace as a financial analyst working in the Finance, Planning & Analysis Division of the Group that reported to the President & CEO of the company, at the time, Mr J. Peter Grace. Back in Europe in 1985, in 1986 he obtained an MBA from INSEAD in Fontainebleau, France.

Marriage and family

On 27 May 1987, Prince Jean married morganatically in Paris Hélène Suzanna Vestur (born Saint-Germain-en-Laye, 31 May 1958), now a high civil servant, "Conseiller d'Etat" judge, daughter of François Philippe Vestur and wife Cécile Ernestine Buisson. His wife and children bore the title "Count(ess) of Nassau." On 27 November 2004 Grand-Duc Henri issued an Arrêté Grand-Ducal upgrading the issue of Prince Jean to Prince/Princesse de Nassau with the qualification of Altesse Royale, without succession rights. The prince and former countess are now divorced, after having had four children together:

  • Countess, now HRH Princess Marie-Gabrielle of Nassau (b. Paris, 8 September 1986)
  • Count, now HRH Prince Constantin Jean Philippe Marie Albert Marc d'Aviano of Nassau (b. Paris, 22 July 1988)
  • Count, now HRH Prince Wenceslas François Baudoin Léopold Juraj Marie Marc d'Aviano of Nassau (b. Paris, 17 November 1990)
  • Count, now HRH Prince Carl-Johan Félix Julien Marc d'Aviano of Nassau (b. Paris, 15 August 1992)

On 18 March 2009, Prince Jean married Diane De Guerre.[1]

Prince Jean works in the water industry, he is an advisor to the GDF-Suez Group, Executive VP of the Suez Fondation and a Member of the Executive Board of Degrémont, a subsidiary of Suez Environnement. It is unclear what his exact function is at Degremont-Suez, even to people working within the company. After having been President of the "Chambre de Commerce belgo-luxembourgeoise en France", for two mandates Prince Jean remains Honorary President of the Chambre de Commerce belgo-luxembourgeoise en France. In 2006 he bought the Southern African Water subsidiary of Suez Environnement, WSSA (Water & Sanitation South Africa) and created Mea Aqua, with the objective to develop water and energy solutions in the Middle East and in Africa. Mea Aqua and its subsidiaries employ today over 2,500 employees.

Prince Jean is, among other, member of the board of the MIP, a business school based in Paris and a board member of a number of financial institutions : Banque Degroof Luxembourg, EFG Bank and EFG International, Ecofin, Hedge funds that are active in the utility segment.[2]

Styles of
Prince Jean of Luxembourg
Reference style His Royal Highness
Spoken style Your Royal Highness
Alternative style Sir


16. Charles III, Duke of Parma
8. Robert I, Duke of Parma
17. Louise Marie Thérèse of France
4. Felix of Bourbon-Parma
18. Miguel of Portugal
9. Infanta Maria Antonia of Portugal
19. Adelaide of Löwenstein-Wertheim-Rosenberg
2. Jean, Grand Duke of Luxembourg
20. Adolphe, Grand Duke of Luxembourg
10. William IV, Grand Duke of Luxembourg
21. Princess Adelheid-Marie of Anhalt-Dessau
5. Charlotte, Grand Duchess of Luxembourg
22. Miguel of Portugal (= 18)
11. Infanta Marie Anne of Portugal
23. Adelaide of Löwenstein-Wertheim-Rosenberg (= 19)
1. Prince Jean of Luxembourg
24. Prince Philippe, Count of Flanders
12. Albert I of Belgium
25. Princess Marie of Hohenzollern-Sigmaringen
6. Leopold III of Belgium
26. Duke Karl-Theodor in Bavaria
13. Elisabeth of Bavaria
27. Maria Josepha of Portugal
3. Joséphine-Charlotte of Belgium
28. Oscar II of Sweden
14. Prince Carl, Duke of Västergötland
29. Sofia of Nassau
7. Astrid of Sweden
30. Frederick VIII of Denmark
15. Princess Ingeborg of Denmark
31. Lovisa of Sweden


  1. ^ "Bijzonder huwelijk in het Stadhuis van Roermond [Special wedding in Roermond]" (in Dutch). Gemeente Roermond. 19 March 2009. Retrieved 19 January 2010. 
  2. ^ "Organisation". Chambre de Commerce belgo-luxembourgeoise en France. Retrieved 18 January 2010. 

External links

Prince Jean of Luxembourg
Royal titles
Preceded by
Prince Sébastien of Luxembourg
Line of succession to
the French throne (Legitimist)

49th position
Succeeded by
Prince Constantin of Nassau

Wikimedia Foundation. 2010.