Sergei Milnichenko's birth name is Sergei Grogoryevich Milnichenko.
Natalya Milnichenko's birth name is Natalya Nikolayevna Shchyolkova.
Sergei Sage's birth name is Sergei Luzginov.
Sergei Chigrakov's birth name is Sergei Chigrakov.
Sergei Kozlovsky's birth name is Kozlovsky, Sergei Vasilyevich.
Sergei Krupennikov's birth name is Sergei Ivanovitch Krupennikov.
Sergei Krikalev's birth name is Krikalev, Sergei Konstantinovich.
Sergei Kudimov's birth name is Sergei Vladimirovitch Kudimov.
Sergei Kurilov's birth name is Kurilov, Sergei Ivanovich.
Sergei Kuryokhin's birth name is Kuryokhin, Sergei Anatolyevich.
Sergei Machilsky's birth name is Machilsky, Sergei Aleksandrovich.
Sergei Linkov's birth name is Linkov, Sergei Yakovlevich.
Sergei Lukyanov's birth name is Lukyanov, Sergei Vladimirovich.