Natasha belongs to the Rostov family. She is Countess Natalya Ilyinichna Rostova, usually called Natasha, and is one of the central fictional characters in Leo Tolstoy's War and Peace.
The Rostovs are a wealthy Russian noble family known for their warmth, generosity, and emotional openness. Natasha is the daughter of Count Ilya Rostov and Countess Natalia Rostova. Her siblings include Vera, Nikolai, and Petya, while Sonya is her cousin and close companion. The family provides one of the novel's most vivid pictures of aristocratic domestic life.
The name can appear in different forms because Russian surnames traditionally change according to gender: Rostov is the masculine form, while Rostova is the feminine form. English translations also vary, with some calling the character Natasha Rostova and others using Natasha Rostov. The family name being tested is therefore Rostov, even though Natasha's full Russian-style surname is Rostova.