Genealogy / THE MEANING AND RESEARCH OF MY POLISH LAST NAME, SURNAME? [4500]

hi my last name is wolos i live in the usa
in my city of phila.im the only one listed is it a rare name
and could you tell me what it means

Genealogy / THE MEANING AND RESEARCH OF MY POLISH LAST NAME, SURNAME? [4500]

hi
could you please tell me what my grandfather from my mother side means

the name is...nitka