The 'E' for race stands for European (i.e., white).
The address for the woman looks like 29 Winter Street in Yeoville. The certificate also lists that she was divorced, so maybe you can find another marriage certificate for her.
There is a facebook group called Southern Africa Jewish Genealogy, and they might have more information about rabbis in the country in the 1930s.
Lak/Lok/Liak/Lock and Kalon/Kolon in Zagare/Joniskis/Gruzdziai, Lithuania
Lak/Lok/Liak/Lock in Plunge/Telsiai in Lithuania
Rabinowitz in Papile, Lithuania and Riga, Latvia
Trisinsky/Trushinsky/Sturisky and Leybman in Dotnuva, Lithuania
Olitsky in Alytus, Suwalki, Poland/Lithuania
Gutman/Goodman in Czestochowa, Poland
Lavine/Lev/Lew in Trenton, New Jersey and Lida/Vilna gub., Belarus