Prince Jean was educated in Luxembourg, Switzerland and France, where he obtained his baccalaureate.

After completing his university education 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.

Prince Jean has been President of the Chambre de Commerce belgo-luxembourgeoise en France.

[citation needed] On 27 May 1987, Prince Jean married morganatically in Paris, France, Hélène Suzanna Vestur (b.

31 May 1958, Saint-Germain-en-Laye, France), now a high civil servant, Conseiller d'Etat and judge, daughter of François Philippe Vestur (b.