He alternated between using this birth name and performing using the last name Volkoff , his mother 's family name .
When he was nine Volkoff joined his brother Igor in Warsaw to dance and perform for the Russian Army .
Volkoff alternated between using this birth name and performing using the last name Volkoff , Volkoff 's mother 's family name .
When he was nine Volkoff joined his brother Igor in Warsaw to dance and perform for the Russian Army .