Of ethnic Georgian origin , his antecedents are uncertain , and it is not known when his family name was Russified from Beriashvili to Beriev .
Beriev was born in Tbilisi in the Tiflis Governorate ( present day Tbilisi , Georgia ) of the Russian Empire .
Of ethnic Georgia origin , his antecedents are uncertain , and it is not known when his family name was Russified from Beriashvili to Beriev .
Beriev was born in Tbilisi in the Tiflis Governorate ( present day Tbilisi , Georgia ) of the Russian Empire .