One of the most prominent and seemingly most straightforward criteria used to distinguish different ethno-cultural groups or subdivide them further was the existence of a distinct dialect, to which the fifth chapter is dedicated. Because of the unrepresentative picture we get from the nature of the surviving epigraphic evidence, we cannot be sure whether some form of the Ionic dialect or accent continued to be spoken in the Roman period. Yet, the continued creative engagement with the Ionic dialect in the fields of historiography and medical writing by authors from all over the Greek world – and not only as imitations of individual canonical authors, but with a clear awareness that they were writing in Ionic Greek – shows that it maintained its very prestigious position as a traditional literary language and that it could still be considered as a meaningful cultural resource.