If you need some help in locating this family, I suggest you contact The Together Plan,  a Jewish charity based in Belarus and London, which aims to help the remaining Jewish population become self-sufficient.  One aspect of this is providing a genealogical research service.  They have the huge advantage of speaking the local language and Russian, as well as understanding the local bureaucracies !  

www. thetogetherplan.com 

Margaret Levin
London UK
family.margaretlev@...
lONDON uk