Dear Eleaonore, No details, just mentioning that last name in one place. The book also mentions that her daughter Jelena was born in 1923, who later moved to Australia. The picture shows the name of Ljusja. It may be a second-hand witness error. I wrote the rest in memory of my father who remembered the Chistov family and based on some other clues. I’ll try to find something else in the archives. Greeting! Igor