1. Nikolai is Mikhail and Maria's brother, Maxim and Olga's uncle.
2. Mikhail is Maxim's father, Victor, Sergei and Olga's uncle.
3. Maria is Nikolai and Mikhail's sister, Victor, Sergei and Olga's aunt.
4. Natalya is Boris Ivanovich's daughter-in-law, Nikolai's wife.
5. Maxim is Victor, Sergei and Olga's cousin, Nikolai and Maria's nephew.
6. Olga is Nikolai and Mikhail's niece, Victor, Sergei and Maxim's cousin.
7. Victor is Mikhail and Maria's nephew, Maxim and Olga's cousin.
8. Igor is Nikolai and Mikhail's brother-in-law, Maria's husband.