Tatiana Davydova
Tatiana Lvovna Davydova (Russian: Давыдова, Татьяна Львовна) (September 18 [O.S. September 6] 1861, in Kamianka, Chigirinsky uyezd, Kiev province, Russian Empire – January 31 [O.S. January 19] 1887 or February 1 [O.S. January 20] 1887, St. Petersburg, Russian Empire) was the niece of Russian composer Pyotr Ilyich Tchaikovsky.