Valentin Fyodorovich Bulgakov was the last secretary of Leo Tolstoy and his biographer. He served as the director of several literary museums and actively participated in Tolstoyan and pacifist initia

Countess Sophia Andreyevna Tolstaya, sometimes anglicised as Sofia Tolstoy, Sophia Tolstoy and Sonya Tolstoy, was a Russian diarist, and the wife of writer Count Leo Tolstoy.