Graham Lewis wrote
I have the UK naturalization certificate (dated 1890)Graham,
"Valkovisk", also known in the past as Volkovysk (Russian spelling) and
Wolkowysk (Polish spelling) is located in Belarus and its modern Belarussian
name is Vawkavysk at 5309 2427. Town had over 5,000 Jewish residents prior
to WWII and was located in Bialystok region.
JGFF lists 227 entries for this shtetl (under the Russian era town spelling:
Volkovysk) and amongst them there is also your entry made by for surname
Rosenberg on March 22.
JGFF database system automatically converts corrupted towns versions names
e.g. "Valkovisk" to the proper one.