For Oliveira-Ferreira there are 4 on Yasni with different names.
Among the most common last names on Yasni Oliveira-Ferreira is on position 4523.
Oliveira's Portuguese and translated in German means olive tree.
(Sent from: Agostinho)
Ferreira is a variation of Ferreiro, the latter "Smith" means in Portuguese. As in German is also the name of Smith in the course of time has changed, such as Schmidt, Schmitz, Schmitt, etc.
(Sent from: C. Ferreira)
