Russian. Née Tolstaya. Daughter of Fëdor Ivanovich Tolstoy, the second cousin (once removed) of Count Lev Nikolaevich Tolstoy (Leo Tolstoy). Married Vasilij Stepanovich Perfil'ev. Informally known as Polen'ka; signed herself Pauline Perfilieff.
Sources: Sofia Tolstaya, 2010, My life, p. 56 n. 243
(See the bibliography for full references to sources)