You might want to post on Slovak Republic's boards for a wider exposure and help.
I can find CHROMIAK, CHROMJAK, ZEMLINSKY, ZEMLIANSKY, BARNA but no WILHOUSKY, as that is an americanized version but did find these 2 arriving NY EL
Vilkowszky, Ilona Ujak 23 1876 1899
Vilkowszky, Maria Ujak 2 1897 1899
Vilkovszki, Anna Locse 23 1877 1900
Vilkovszki, Janos 36 1862 1898 view
Vilkovszky, Andor Loesc, Hungary 3 1904 1907
Vilkovszky, Andras Locse 34 1868 1902
Vilkovszky, Anna Loesc, Hungary 34 1873 1907
Vilkovszky, Anna Loesc, Hungary 1 1906 1907 these bunch is from Locse which is Levoca, Slovak Republic.
VILKOVSKY still in Levoca's phone book and other locations:
http://www.zoznam.sk/hladaj.fcgi?co=telzoznam&s=vilkovsk...Údol
1773, 1786, 1863–1882, 1920–1948 Ujlak,é1808 Ujak, Ujach, 1888–1902 Uják, 1907–1913 Sárosújlak, 1948– Údol
In Poland : Wilkowski, Wiłkowski, Ziemlański, and Chromiak.