The duchess of Morny was born Princess Sofia Sergeyevna Trubetskaya in 1836 at Moscow; she might have been illegitimate daughter of Nicholas I of Russia.
In 1856, Morny was sent to the coronation of Alexander II of Russia and there he met Sophie, whom he married at St. Petersburg on January 7, 1857. He was created Duke in 1862.
The had four children:
Marie Eugenie de Morny (Paris, 1857 - Paris, 1883):
Auguste Charles Louis Valentin de Morny, 2nd Duc de Morny (Paris, 1859 - Paris, 1920)
Serge de Morny (Paris, 1861 - Paris, 1922)
Sophie Mathilde (Missy) de Morny (Paris, 1863 - Paris, 1944)
Duc de Morny
Duchesse de Morny