Where does “Andreiescu” come from?

Andreiescu (Romanian) comes from Romanian Andrei, from Russian Андре́й, from Ancient Greek Ἀνδρέας, from Ancient Greek ἀνήρ, from Proto-Hellenic *anḗr — man.

Ancestry of “Andreiescu”, step by step

StepLanguageWordMeaning
1RomanianAndreiAndrew
2RussianАндре́й—
3Ancient GreekἈνδρέας—
4Ancient Greekἀνήρman; husband; human being, as opposed to a god
5Proto-Hellenic*anḗrman
Every word from Proto-Hellenic *anḗr →Every word from Ancient Greek ἀνήρ →Every word from Ancient Greek Ἀνδρέας →