Charles de Morny, Duke of Morny

He had married at Saint Petersburg on 7 January 1857, Princess Sofia Sergeyevna Trubetskaya (Moscow, 25 March 1836 – 8 August 1898), the only daughter of Prince Sergey Vasilyevich Trubetskoy (1814 – 12 May (30 April Old Style), 1859) and his wife Ekaterina Petrovna Mussina-Pushkina (1 February 1816 – c. 1897). Their children included:

Marie Eugenie de Morny (1857–1883), who married a Spanish noble, José Ramón Gil Francisco de Borja Nicolás Osório y de Heredia, 9th Conde de La Corzana (1854–1919), in 1877 in Madrid, and had a son:

José Osorio y de Morny (Madrid, 1878 – Madrid, 1905). He married María de la Purificación Dorticos-Marín y León, Marquesa de Marín (1878–1928), in 1902 in Madrid. He had children.

Auguste Charles Louis Valentin de Morny (1859–1920), who succeeded his father as the 2nd Duc de Morny. He married Carlota de Guzmán-Blanco y de Ybarra (Caracas, 1869 – Courbevoie, 1939) in 1886 in Paris and had three children:

Auguste de Morny, 3rd Duc de Morny (1889–1935), unmarried and without issue.

Antoine de Morny, 4th Duc de Morny (1896–1943), unmarried and without issue.

Anna Teresa de Morny (1890–1924), unmarried and without issue.

Serge de Morny (1861–1922), who died unmarried and without issue.

Sophie Mathilde (Missy) de Morny (1863–1944), who married Jacques Godart, 6th Marquis de Belbeuf (1850–1906) in 1881 in Madrid and divorced him in 1903; without issue.

He also had an illegitimate daughter by Fanny Mosselman, who was referred by Honoré de Balzac.

Leopoldina Louise le Hon (ca. 1840-1931) married the Polish prince Stanislas-Auguste Poniatowski, of the Royal House of Poniatowski, and had children. Louise has living descendants.