Kleinmichel was married twice, first in 1816 to Varvara Kokoshkina (died 1842), the granddaughter of the business magnate
Alexei Turchaninov. They divorced, according to rumours, because of his
impotence. In 1832 Kleinmichel married Kleopatra Petrovna Ilyinskaya (October 17, 1811 – January 17, 1865), a relative of
Nicholas I's mistress
Varvara Nelidova. She died of tuberculosis in Paris, and was buried in St. Petersburg. She was known in society for adopting Nicholas's illegitimate children. They had eight children. • Yelizaveta (1833–1896), married the lieutenant general Pilar von Pilchau. • Aleksandra (1835–1912),
lady-in-waiting. • Nikolai (1836–1878), major general, married Countess Maria von Keller (1846–1931), granddaughter of Countess Amalie zu
Sayn-Wittgenstein-Berleburg-Ludwigsburg, sister of Prince
Peter zu Sayn-Wittgenstein, who, as Marie Kleinmichel, was the author of Memories of a Shipwrecked World. They had one surviving daughter, Olga. • Alexander (1837–1856) •
Vladimir (1839–1882), major general •
Konstantin (1840–1912) • Olga (1845–1920) • Mikhail (1848–1872), died in Paris. ==References==