Princess Catherine Alexandrovna Yurievskaya (Russian: ????????? ????????????? ?????????, Ekaterina; 22 September 1880 – 22 December 1959) was the natural daughter of Alexander II of Russia by his mistress (later his wife), Princess Catherine Dolgorukov.
In her own family, she was known as Katia.
In 1880, she was legitimated by her parents' morganatic marriage.
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 was during World War I, in Russia, and she suffered hardships during the ensuing Russian Civil War.
In the 1920s, she became a professional singer.
In 1932, she settled in England on Hayling Island, where she died in 1959.