From
http://www.rootsweb.com/~polwgw/namelist.html
Below is a list of common first names in Poland. These names are based on the saints and the feast days as found in the old-style Proper of the Saints of the Roman Calendar. The names in parenthesis are the English variations. More than one saint's name and feast day may follow a single first name. Note: In 1969, the dates of celebration of feast days were changed for many saints.
[b]Stefan, Szczepan (Stephen, Steven)[/b] -- Stephen of Perm Russian, April 26; [b]Stephen Pechersky Ukrainian, April 27;[/b] Stephen I, Pope August 2; Finding the Body of Stephen the First Martyr August 3; King Stephen, patron of Hungary September 2; Stephen the First Martyr December 26
The reason that you couldn't find anything on the web is probably because you have spelt Ukrainian incorrectly