Where does “Oliveira” come from?

Oliveira (English) comes from Portuguese oliveira, from Latin olivarius, from Latin Olīva, from Ancient Greek ἐλαία, from Proto-Hellenic elaíwā, from Proto-Indo-European loiwom.

Ancestry of “Oliveira”, step by step

Step	Language	Word	Meaning
1	Portuguese	oliveira	olive tree
2	Latin	olivarius	Of olives or olive oil, or the making of olive...
3	Latin	Olīva	an olive fruit
4	Ancient Greek	ἐλαία	olive tree; olive; naevus
5	Proto-Hellenic	elaíwā	—
6	Proto-Indo-European	loiwom	—

Every word from Proto-Indo-European loiwom →Every word from Proto-Hellenic elaíwā →Every word from Ancient Greek ἐλαία →