Quote Originally Posted by Teleklos Archelaou
If it didn't alter scripts, I'd help supply Greek names. But I think it might mess it up. Learning Greek itself won't necessarily help you with place names though - the best thing I would advise would be finding a 19th century English->Ancient Greek dictionary. University libraries often have them. They can give you names for lots of places and peoples very quickly and easily.
I'm 90% sure that it won't affect scripts. Scripts work by using the internal name of cities and characters, rather than the "displayed" name that we see. Changing a city's name in-game is akin to simply editing the displayed name in the text files but leaving the internal name the same.

For those who are wondering how to get this feature working with 1.5 and 1.6, go to your preferences folder and open preferences.txt. At the very bottom of the file there should be an entry for EDIT_SETTLEMENT_NAMES or something similar. Change it to true and you'll be able to change settlement names in-game in the building/recruitment browser (simply click the settlement name at the top of the scroll).