Where does “Aleksandar” come from?

Aleksandar (Serbo-Croatian) comes from Old Church Slavonic Алеѯандръ, from Ancient Greek Ἀλέξανδρος, from Ancient Greek ἀλέξω, from Ancient Greek ἀνδρός, from Ancient Greek ἀνήρ, from Proto-Hellenic *anḗr — man.