Tatyana Tchaikovskaya
Niece of the composer (b. March 1883 in Tiflis; d. 26 March 1970 at Juan les Pips, France), born Tatyana Anatolyevna Chaykovskaya (Татьяна Анатольевна Чайковская); during her first marriage she was known as Tatyana Anatolyevna Venevitinova (Татьяна Анатольевна Веневитинова); during her second marriage as Baroness Ungern-Sternberg; and during her third marriage as Mrs Warren Crosse.
Tatyana was the only child of the composer's brother Anatoly Tchaikovsky (1850–1915) and his wife Praskovya (b. Konshina, 1864–1956). She married for the first time to the diplomat Aleksey Vladimirovich Venevitinov (1875–1925), by whom she had three children: Vladimir; Yelena (b. 1906); and Apollinariya.
Her second marriage took place in 1909 to Baron Paul Adolf Leonhard von Ungern-Sternberg (1882–1948), by whom she had two more children: Margareta (1910-1980), and Maria (1912–2002). This marriage was dissolved in 1928, and Tatyana later married for the third and final time to the author Felix Warren Crosse (1892–1975).
Correspondence with Tchaikovsky
No letters from the composer to Tatyana Tchaikovskaya are known, but 2 letters from Tatyana to her uncle, dating from 1891 and 1893, are preserved in the Tchaikovsky State Memorial Musical Museum-Reserve at Klin (a4, Nos. 5731–5732).