He received as godfather, his maternal uncle, Carl of Württemberg, and as godmother, his paternal aunt, Princess Chantal of Orleans.

However, the wedding was cancelled at the last moment because of a dispute over religious denomination: Jean's father, Henri, feared the Orléans claim to the throne would be compromised if there were to be a Protestant heir.

[9] On 29 November 2008, Henri, then Count of Paris, announced the engagement of Jean, the then Duke of Vendôme, to Maria Magdalena Philomena Juliana Johanna de Tornos y Steinhart, born in Vienna on 19 June 1977.

The pair are distantly related, as both are descendants of Count Jaroslav Bořita of Martinice and his first wife, Eusebia von Sternberg (1584–1634).

[11][better source needed] The bride wore a gown by Christian Lacroix and a jacket embroidered by Maison Lesage.

[12] In 2021, Jean filed a lawsuit against the Saint-Louis foundation, demanding €1 million in damages and the return of five properties, including the Château d'Amboise.

Jean's lawsuit alleges that the Institute violated their contract to never alter the property, after they announced plans to transform the Pavillon d’Enghien into a €760-a-night luxury hotel, containing a spa and gastronomic restaurant.

[18] Jean has also expressed his opposition to same-sex marriage, having participated in the La Manif pour tous protests, as well as abortion.