The key to locating Father's surviving family is knowing EXACT place of origin.

list of villages/towns (starting w/R) within 30 mile radius of Kiev:

Roslavichy
Revnoye or Revne
Rozhny
Rudnya
Rohozin
Rusanov

list of villages/towns (starting w/R) in Kiev Region:

Rudnytske
Rozalivka
Rozkopantsi
Revne
Rohoziv
Rozhivka
Rozhny
Rudnya
Rusaniv
Roslavychy
Rovy
Rudnya-Dymerska
Rachky
Rohizna
Rubchenky
Rude Selo
Rozvazhiv
Rusaky
Rusavka
Rzhyschiv
Rozhiv
Rosava
Rahivka
Radynka
Rokytne
Romashky
Rohizna
Ruda
Rozkishna
Rozumnytsia
Ryzhky
Rosishky
Raikivschyna