Dancer, teacher of ballet and Russian artistic director, born in Petersburgo on September 27, 1876 and died in Nice on June 23, 1951.
He studied at the St. Petersburg Imperial school with Pavel Gerdt, Marius Petipa and Lev Ivanov, he made his debut in the company of the Marinsky Theatre in 1894. Since 1903, became the Manager of the trials of the company for which occupied the post of régisseur Générale in 1914. He left Petrograd after the revolution, took with him the annotations of the ballets under the system of Vladimir Stepanoff (1866-96), allowing its reproduction in the West. In 1920 he settled in Paris and a year later rode the sleeping beauty (Tchaikovsky) for the Ballets Russes of Diaghilev, according to the original choreography by Petipa. His disagreement with the introduction of additional dances by the choreographer Bronislava Nijinska, led him to abandon the Diaghilev company shortly before the premiere. Other ballets from the classical repertoire by Sergeyev, revived from the original of Petipa and Ivanov, were: La Bayadere (Minkus, 1923) for the Opera of Latvia, El Lago de los Cisnes (Tchaikovsky, 1932) for the Camargo Society, Nutcracker (Tchaikovsky, 1934) for the Vic-Wells Ballet, Coppélia (Delibes, 1938) for the Ballets de Monte Carlo of René Blum and Polovtsian dances of the Prince Igor (Borodin1941) for the International Ballet of Mona Inglesby. He was founder and director of the Russian Ballet of Sergeyev in Great Britain (1934) and principal Director of the Ballet of Mona Inglesby between 1941 and 1948.