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Leonid Polovinkin's birth name is Leonid Alexeyevich Polovinkin.
Leonid Polovinkin was born on August 13, 1894, in Kurgan, Russia.
Leonid Ejdlin's birth name is Leonid Danilovitch Ejdlin.
Alexander Alexeyevich Chekalin was born in 1947.
Boris Alexeyevich Galitzine died in 1715.