Grigory Shershnevsky was born in Vilna, Lithuania shortly before the German occupation in 1941. He was "adopted" by a Christian Polish women who also saved a number of other children. His father was active in the underground resistance movement and found Grigory after the war. His mother was presumed murdered by Germans.
The Christian Polish women who hide him has since been award as a Righteous Among the Nations for hiding Jewish children from the Nazis. More can be learned about the Righteous Among the Nations here.