Andrey Efremoff 1900?-

Does anybody know Andrey Vasilievich Efremoff, who was born approximately in 1900 in Kazakstan, village Bogolyubovo. He escaped to China after the red revolution and from China he emigrated to Australia. He had a brother, Apollon Efremoff, born 1897. Regards, Timo Laakso, Finland