How could the name 'Alexander' be anything other than Greek? What evidence do you have Deniz that the Greeks took it from somewhere else? Or do you expect us to believe your speculation over the evidence? Even if the Mycenaean Greeks did take it from somewhere else, by the time Alexander was born, it was recognised as a Greek name.
[quote]The name in English is taken from the Greek name Ἀλέξανδρος (Alexandros). Etymologically, the name is a compound of the Greek verb ἀλέξω (alexw) "to push back","to hold off" and the noun ἀνδρός (andros), genitive of ἀνήρ (anēr) "man". Thus it may be roughly translated as the man who was unbeatable.
The earliest attested record of the name is the Mycenaean Greek of the feminine Alexandra, written in Linear B.[/quote]
http://en.wikipedia.org/wiki/Alexander