Who married Catherine Yurievskaya?

Princess Catherine Alexandrovna Yurievskaya (Russian: Екатери́на Алекса́ндровна Ю́рьевская, romanized: Yekaterina Aleksandrovna Yuryevskaya; 21 September [O.S. 9 September] 1878 – 22 December 1959) was the natural daughter of Alexander II of Russia by his mistress (later his wife), Princess Catherine Dolgorukova. In 1880, she was legitimated by her parents' morganatic marriage. In her own family, she was known as Katia.

After her father's assassination in 1881, her mother brought her up in France. She was married there in 1901, having two sons, but was widowed in 1910. Her second marriage came during the First World War in Russia, and she suffered hardships during the ensuing Russian Civil War. In the 1920s, she became a professional singer. In 1932, she moved to the United Kingdom where she settled on Hayling Island in Hampshire, where she died in 1959.

Князь Алекса́ндр Влади́мирович Баря́тинский (22 мая 1870 — 8 марта 1910) — штабс-ротмистр; известный в своё время бонвиван, прославившийся своим романом с красавицей Линой Кавальери.

Prince Sergei Platonovich Obolensky Neledinsky-Meletzky (November 3, 1890 – September 29, 1978), known as Serge Obolensky, was a Russian-born aristocrat then American citizen, U.S. Army colonel, socialite and publicist. He served as vice chairman of the board of directors of the Hilton Hotels Corporation.