That is true, but thats a slavic prefix on the last name, and the Slavs came to the Balkans around the 8th century. Alexander clearly wasn't Slavic.
Eighth century? I suggest you do some more research in this matter and stop throwing in some of your anti Serbian comments. Serbia at least was a Real Country in the past, unlike Bosnia. Next thing you are going to claim is that Kosovo also is and was an independent country, bwahahahhaa