Eugene Jean, Count of Soissons

Prince Eugene Jean of Savoy (Eugene Jean François; 23 September 1714 – 23 November 1734) was the last Count of Soissons of the House of Savoy.

The only son of Emmanuel Thomas, Count of Soissons (a member of the House of Savoy-Carignano), and Princess Maria Theresia of Liechtenstein, he succeeded to his father's titles, Count of Soissons and Duke of Troppau, when the latter died in 1729. In 1731, Eugene Jean became a Knight in the Austrian Order of the Golden Fleece, like his father.

In Massa on 10 November 1734 he was married by proxy to Princess Maria Teresa Cybo-Malaspina (1725–90), Duchess of Massa and Princess of Carrara in her own right. As the bridegroom died thirteen days later in Mannheim, however, the marriage was annulled on the basis that it was never consummated. Maria Teresa would later marry Ercole III d'Este, Duke of Modena.

With his death, the title "Count of Soissons" became extinct and reverted to the French crown. The title "Duke of Troppau" returned to his mother, whose estates passed to Franz Joseph I, Prince of Liechtenstein, when she died in 1772.

Ancestry

Family of Eugene Jean, Count of Soissons

16. Thomas Francis, Prince of Carignano               8. Eugene Maurice, Count of Soissons                       17. Marie de Bourbon               4. Louis Thomas, Count of Soissons                             18. Lorenzo Mancini               9. Olympia Mancini                       19. Girolama Mazzarini               2. Emmanuel Thomas, Count of Soissons                                   20. Charles de La Cropte, Lord of Chanteirac               10. François Paul de La Cropte, Lord of Beauvais                       21. Isabeau d'Auzaneau               5. Uranie de La Cropte de Beauvais                             22. Gédéon Martel               11. Charlotte Martel                       23. Élisabeth de La Mothe-Fouqué               1. Eugene Jean of Savoy, Count of Soissons                                         24. Karl I, Prince of Liechtenstein               12. Karl Eusebius, Prince of Liechtenstein                       25. Anna Marie Šemberová of Boskovic and Černá Hora               6. Hans-Adam I, Prince of Liechtenstein                             26. Maximilian, Prince of Dietrichstein               13. Countess Johanna Beatrix of Dietrichstein                       27. Princess Anna Marie of Liechtenstein               3. Princess Maria Theresia of Liechtenstein                                   28. Maximilian, Prince of Dietrichstein (= 26)               14. Ferdinand Joseph, Prince of Dietrichstein                       29. Princess Anna Maria of Liechtenstein (= 27)               7. Princess Edmunda of Dietrichstein-Nikolsburg                             30. Johann Anton I, Prince of Eggenberg               15. Countess Maria Elisabeth of Eggenberg                       31. Margravine Maria Anna of Brandenburg-Bayreuth