Prince Ivan Sergeyevich Bariatinsky (1740-1811) was a diplomat. He served as Russian Ambassador to the Court of Louis XVI. He was considered extremely handsome gaining the nickname “le beau Russe” at Versailles.
His daughter Anna (1774-1825) married a Count Tolstoy. His son Prince Ivan Ivanovich Bariatinsky (1772-1825) was also a diplomat. He served as the Russian minister at the Bavarian Court at Munich. His first wife was the British aristocrat, the Hon. Frances Dutton, daughter of Lord Sherborne. Frances died in childbirth and he then married the daughter of the Prussian Ambassador in Vienna, Countess Maria von Keller (1792-1858.)
Ivan’s daughter was the beautiful Princess Leonilla Bariatinskaya (1816-1918). She was the second wife of the liberal German-Russian aristocrat Prince Ludwig of Sayn-Wittgenstein, owner of the Mir Castle and Verkiai Palace. Ludwig began his career as diplomat, but participated on some level in the Decembrist movement and had to leave Russia. His father, Field Marshal Prince Peter of Sayn-Wittgenstein (decorated hero of the Napoleonic wars) managed to secure his pardon. As a result of his first marriage to Princess Caroline Radziwill he inherited an enormous estate in Central Europe. His two children from his first marriage had interesting lives. The daughter Marie married the German Chancellor Prince Hohenlohe-Schillingsfurst and his son married the French courtesan Rosalie Leon. As for Leonilla, she had four children of her own with Ludwig. She lived a very long life dying at the age of 102 in 1918.
The wife of Ivan's grandson Prince Anatole Bariatinsky, Princess Marie Sergeyevna Bariatinskaya, who authored a book of memoirs “My Russian Life,” in 1923. Another of Ivan’s grandsons, Prince Alexander Vladimirovich Bariatinsky, married Alexander II’s daughter Princess Ekaterina Yurievskaya.