When was Alexander deemed “great” and by whom? Also, was there a set criteria at the time that determined who could be given the epithet “great”?

by 2LOSEYOURMIND4
BruceWareAllen

Unknown Romans, presumably. The earliest reference to him with the moniker "Great" is Plautus (?- 185BC) in the Mostelleria ( 775-7, Alexandrum magnum atque Agathoclem aiunt maxumas), which, given that this was low comedy, suggests an audience familiar with the attribution and the concept. He is also so called by Quintus Curtius Rufus' (?-AD 54) who wrote a biography Historiae Alexandri Magni. He was, not surprisingly, much admired by the ROmans. Pompey the Great (Gnaeus Pompeius Magnus , 106-48 BC) liked to be called the New Alexander for his part in snaffling a good deal of the eastern Mediterranean for Rome.