Where does “Андреи” come from?

Андреи (Old Church Slavonic) comes from Ancient Greek Ἀνδρέας, from Ancient Greek ἀνήρ, from Proto-Hellenic *anḗr — man.

Ancestry of “Андреи”, step by step

StepLanguageWordMeaning
1Ancient GreekἈνδρέας—
2Ancient Greekἀνήρman; husband; human being, as opposed to a god
3Proto-Hellenic*anḗrman
Every word from Proto-Hellenic *anḗr →Every word from Ancient Greek ἀνήρ →Every word from Ancient Greek Ἀνδρέας →