Nizhne-Studënyy is in Zakarpattia (Transcarpathia) Oblast of SW Ukraine at grid ref N 48°42′00″ E 23°22′00″.
It’s closer to the Slovakian and Hungarian border and the towns of Uzhhorod and Ivano-Frankivsk than to Lviv/Lvov which is some way to the north. See if there are records in the municipal/district archives of those 2 towns or the capital of Zakarpattia.
Carole Shaw, London UK
WOLFSBERGEN, BOSMAN: Holland
ZANDGRUNDT (plus variations), SANDGROUND: Warsaw, London and beyond
JACOBOVITCH/JACKSON: Staszow, Poland & London
KOSKOVITCH/KENTON: Staszow, Poland & London