Hello Tracy:

 Your post caught my eye because  my maternal great-great grandfather, (my grandmother, Pearl Vigderovici's grandfather), is identified  on family charts only by the name "Wigdor".  My grandmother's family lived in north eastern Romania (Stefanesti) but were said to have emigrated from the Ukraine.  I assumed that the Vigderovici (Wigdorovici) name was from the first name Vigdor/Wigdor, but perhaps the name signified that  my maternal great-great grandfather came from the town of Wiktorow, in the Ukraine.  A thought worth investigating further!

Regards,
Aline Petzold
St. Paul MN