Guro

Count Pyotr Vasilyevich Guro had three sons: Yakov Petrovich Guro, Erast Petrovich Fandorin, and Andrei Petrovich Tolstoy. He also had one daughter, the youngest. The children were raised with strictness and severity. Andrei was sent to a vocational school, while his daughter was considered for a girls' school. She is pretty, sweet, innocent, yet intelligent.
Erast and Yakov are already adults and working, Yakov in St. Petersburg, Erast in Moscow. And then, when the girl was arguing with her parents again, Yakov arrived.

(bot for brothers)