Analysis of information sources in references of the Wikipedia article "Staromakedonski jezik" in Croatian language version.
Many surviving public and private inscriptions indicate that in the Macedonian kingdom there was no dominant written language but standard Attic and later on koine Greek.
Family: Ancient Greek is generally taken to be the only representative (though note the existence of different dialects) of the Greek or Hellenic branch of Indo-European. There is some dispute as to whether Ancient Macedonian (the native language of Philip and Alexander), if it has any special affinity to Greek at all, is a dialect within Greek (...) or a sibling language to all of the known Ancient Greek dialects. If the latter view is correct, then Macedonian and Greek would be the two subbranches of a group within Indo-European which could more properly be called Hellenic. Related Languages: As noted above, Ancient Macedonian might be the language most closely related to Greek, perhaps even a dialect of Greek. The slender evidence is open to different interpretations, so that no definitive answer is really possible; but most likely, Ancient Macedonian was not simply an Ancient Greek dialect on a par with Attic or Aeolic (...).
Family: Ancient Greek is generally taken to be the only representative (though note the existence of different dialects) of the Greek or Hellenic branch of Indo-European. There is some dispute as to whether Ancient Macedonian (the native language of Philip and Alexander), if it has any special affinity to Greek at all, is a dialect within Greek (...) or a sibling language to all of the known Ancient Greek dialects. If the latter view is correct, then Macedonian and Greek would be the two subbranches of a group within Indo-European which could more properly be called Hellenic. Related Languages: As noted above, Ancient Macedonian might be the language most closely related to Greek, perhaps even a dialect of Greek. The slender evidence is open to different interpretations, so that no definitive answer is really possible; but most likely, Ancient Macedonian was not simply an Ancient Greek dialect on a par with Attic or Aeolic (...).