If it was named for a different character, this 1899 Chekhov play would be "Niece Sonya"
I know this words by heart in 
Russian, not sure if it sounds that good in translation, copying it from some web 
site: [DOC] [TLE] Uncle Vanya at Torn Space - Artvoice [PAR] Aug 1, 2013 ... With Anton Chekhov's 1899 masterwork, Uncle Vanya, Torn Space ... Tennessee 
Williams's postwar realist play, A Streetcar Named Desire, but with Chekhov, ...