1 Nunes = Not Jewish in origin, a patronymic meaning Son of Nuno. 2  Some converted Sephardic Jews from Portugal did adopt this name. 3  Spanish version is Nunez. 4  Oliva-Cavia. 5  CÃ¡via = Oliveira originates From. 6  Spain. 7  Paiba. 8  Paiva = Pereira originates From. 9  Spain = Perera originates From.  portugal