"The Aryans, even according to the AIT, moved not into a vacuum but a region thickly populated by a people who may have been on the decline and moving eastward but who were also more numerous, more advanced in urbanized civilization and literate. Now, would the immigrants be in a position to give new names and would the natives accept them for their rivers? … I doubt it. When thousands of Greeks were forced out of Turkey in the early 1920s and immigrated into the Greek islands and the mainland, they formed new communities and often gave to these the names of their former habitats (eg New Ionia, New Smyrna, New Halkidona etc). This is as far as their “nostalgia” went. They did not rechristen nearby mountains, plains or rivers, but accepted the existing geographical nomenclature."
January 1, 1970
https://en.wikiquote.org/wiki/Nicholas_Kazanas