First step, I found the village Wiesenberg. And now I know why in the source David uploaded here, Lemberg was mentioned:
Wiesenberg was a village inhabited by German farmers and craftsmen in Eastern Galicia, about 20 km north of Lemberg and 3 km from the small town of Kulików. Adjacent to Wiesenberg was the Ukrainian village of Merwitschi (Polish: Mierzwica). The main town of the county was Żółkiew (after 1945 Żółkiew was called Nesterow, since 1990 Zovkva). The area around Lviv was part of the Austro-Hungarian monarchy from 1772 to 1918 as the "Kingdom of Galicia and Lodomeria", belonged to Poland until 1939, then to the Soviet Union, and since 1990 to Ukraine. Today Lemberg is called Lviv.
And Wiesenberg and Mierzwica are the same locations.