The Hellenic Identity according to Jonathan Hall In the 4th century BC, the Athenian assembly debated whether to align with King Philip II of Macedonia, who had begun invading Greek city-states. Isocrates hoped to unite the bickering city-states and believed Philip could lead a war against longtime enemy Persia. Echoing Philip’s own argument, he contended that ...

  "Speakers of these various Greek dialects settled different parts of Greece at different times during the Middle Bronze Age, with one group, the "northwest" Greeks, developing their own dialect and peopling central Epirus. This was the origin of the Molossian or Epirotic tribes."  E.N.Borza "In the shadow of Olympus; The emergence of Macedon" (revised edition, 1992), ...