The information that we have is that it is German/Russian.
Other Nezars are found in France and Algeria.
It has been spelt NEZAR since early 1600's, I have death and baptismal certificates of people from 1792. I have record from 1792 as well as a picture in the Old Kaapse Almanak, where it indicates a little house belonging to Nezar.
Thank you
Henriette Nezar