Prince Eugene Jean, Count of Soissons

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

Mairiage
In Massa on 10 November 1734 he married by proxy to Princess Maria Teresa Cybo (1725–1790), 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.