Countess Xenia Czernichev-Besobrasov

Xenia's widower, Archduke Rudolf remarried Princess Anna Gabriele von Wrede in 1971 and had further issue.

Xenia was killed on 20 September 1968 when the car she was in with her husband collided with a truck. Her husband was seriously injured. She was buried on the grounds of the Chateau de Belœil in Belgium.

The engagement between Archduke Rudolf and Countess Xenia Czernichev-Besobrasov was announced on 30 April 1953. The couple were married on 23 June 1953 at Our Lady of Mt. Carmel Roman Catholic Church at Tuxedo Park, New York, where Rudolf and his mother the Dowager Empress Zita were said to live on a "large estate". The wedding, officiated by Bishop Fulton J. Sheen, was attended by over 100 guests, including Dowager Empress Zita. The press reports claim that this was the first imperial marriage in the United States, but the first such marriage was actually between Napoleon's younger brother Jérôme Bonaparte and an American heiress Elizabeth Patterson (Betsey Patterson).

Countess Xenia Czernichev-Besobrasov was one of the first non-royal brides to marry into the former Imperial House of Austria in what would be accepted as an equal marriage, despite the relative obscurity of her father's family and the recentness of his title. The Habsburg house laws had been changed by former Crown Prince Otto of Austria in 1953 to permit archdukes to marry outside ruling and formerly reigning houses for the first time, permitting cadet archdukes to marry into increasingly minor noble houses.

Countess Xenia Czernichev-Besobrasov (Chernysheva-Besobrasova Russian: графиня Ксения Сергеевна Чернышёва-Безобразова; 11 June 1929, Paris – 20 September 1968, Casteau, Belgium) was the first wife of Archduke Rudolf of Austria, the youngest son of the last reigning Emperor of Austria-Hungary, Charles I.

She was the younger daughter of Count Sergei Czernyshev-Besobrasov (later of New York City) by his wife Countess Elisabeth Dmitrievna Sheremeteva, and has descended from two prominent Russian comital families. Xenia's father, Count Sergei, was a czarist courtier whose father was made a Russian count in 1908 as the son-in-law of the last Count Chernyshev-Kruglikov (that family, now extinct, itself rose to comital status in 1832, by marriage to the heiress of the extinct Chernyshev family, counts in Russia since 1742). Count Sergei fled Russia after the Revolution, and settled in the United States with his wife Elizabeth, his son Alexander, and two daughters Irina and Xenia. In 1949, his older daughter Irina married Prince Teymuraz Bagration (1912-1992) as his second wife, without issue. Teymuraz's mother was Princess Tatiana of Russia.