In 1869, he married Daria Konstantinowa Opotschinina, the granddaughter of Mikhail Kutuzov: she was made Countess of Beauharnais (died 1870 in childbirth).

Daria, Countess de Beauharnais (19 March 1870, Saint Petersburg - 4 November 1937, Leningrad, Saint Petersburg).
She married, firstly, Prince Leon Kotchoubey (1862-1927) in Baden-Baden, Karlsruhe, Baden-Wurttemberg on 7 September 1893; they divorced in 1911.
Married, secondly, Waldemar, Baron von Graevenitz (1872-1916) in Saint Petersburg on 22 February 1911.
Married, thirdly, Victor Markezetti (d. 15 January 1938).
She had one child with her first husband:
Prince Eugéne Kotchoubey de Beauharnais (24 July 1894, Peterhof - 6 November 1951, Paris)
In 1878 he married Zeneïde Dmitrijewna Skobelew (also known as Zina) (died 1899), sister to the Russian general Mikhail Skobelev.
Zina later had an open long-term affair with Grand Duke Alexei Alexandrovich of Russia.
In 1869, he married Daria Konstantinowa Opotschinina, the granddaughter of Mikhail Kutuzov: she was made Countess of Beauharnais (died 1870 in childbirth).
Daria, Countess de Beauharnais (19 March 1870, Saint Petersburg - 4 November 1937, Leningrad, Saint Petersburg). She married, firstly, Prince Leon Kotchoubey (1862-1927) in Baden-Baden, Karlsruhe, Baden-Wurttemberg on 7 September 1893; they divorced in 1911. Married, secondly, Waldemar, Baron von Graevenitz (1872-1916) in Saint Petersburg on 22 February 1911. Married, thirdly, Victor Markezetti (d. 15 January 1938). She had one child with her first husband:
Prince Eugéne Kotchoubey de Beauharnais (24 July 1894, Peterhof - 6 November 1951, Paris)
In 1878 he married Zeneïde Dmitrijewna Skobelew (also known as Zina) (died 1899), sister to the Russian general Mikhail Skobelev. Zina later had an open long-term affair with Grand Duke Alexei Alexandrovich of Russia.
Eugen Maximilianovich, 5th Duke of Leuchtenberg