The term "Armeno-Phrygian" is also used for a hypothetical language branch, which would include the languages spoken by the Phrygians and the Armenians, and would be a branch of the Indo-European language family, or a sub-branch of either the proposed "Graeco-Armeno-Aryan" or "Armeno-Aryan" branches.
There are two conflicting theories regarding the potential origins of the Armeno-Phrygians:
Ancient Greek historian Herodotus stated that Armenians were colonists from Phrygia ("the Armenians were equipped like Phrygians, being Phrygian colonists" (Ἀρμένιοι δὲ κατά περ Φρύγες ἐσεσάχατο, ἐόντες Φρυγῶν ἄποικοι)(7.73).[2] Phrygia encompassed much of western and central Anatolia during the Iron Age. According to Ancient Greeks, the Phrygians had originated in the Balkans as Bryges. This led some scholars to suggest that Armenians also originated in the Balkans.[3] According to Igor Diakonoff, the Phrygians and the Proto-Armenians migrated eastward during the Bronze Age collapse (at the end of the 13th century and the first half of 12th century). This theory suggests that Proto-Armenians were known by the name of Mushki to the Assyrians and that they blended with the ancient populations of the Armenian Highlands, including speakers of Hurro-Urartian languages, to create Armenians.[4] Assyrian sources identify the Mushki with the Phrygians, but later Greek sources then distinguish between the Phrygians and the Moschoi (commonly thought to be a variation of "Mushki").
Some modern scholars instead believe that a proto-Armeno-Phrygian population originated in eastern Anatolia and/or the Armenian Highlands, from where the Phrygians later migrated westward.[5]
According to some scholars, there is evidence of language borrowings (Armenisms) from the Proto-Armenian language into Hittite and Urartian,[6] what would prove the presence of Proto-Armenians in the Armenian Highlands, in the lands of ancient Armenia, since at least the end of the 2nd millennium BC.
^Hrach Martirosyan. "Origins and historical development of the Armenian language" (pp. 7–9) in Journal of Language Relationship, International Scientific Periodical, no. 10 (2013). Russian State University for the Humanities, Institute of Linguistics of the Russian Academy of Sciences.