Alexandra (Ancient Greek: Ἀλεξάνδρα) is a female given name of Greek origin. It is the first attested form of its variants, including Alexander (Ancient Greek: Ἀλέξανδρος, Aléxandros). Etymologically, the name is a compound of the Greek verb ἀλέξειν (alexein; meaning 'to defend') and ἀνήρ (anēr; GEN ἀνδρός, andros; meaning 'man'). Thus it may be roughly translated as "defender of man" or "protector of man". The name Alexandra was one of the epithets given to the Greek goddess Hera and as such is usually taken to mean "one who comes to save warriors".
https://en.wikipedia.org/wiki/Alexandra