Macedon

Macedon was to many Greeks a northern barbarian centre which had been for decades under the control of the Persian Empire. This led to much distruct and bias against the Macedonians which can be perceived in the writings. However, in the span of two generations the Macedonian royal family was able to conquer a lot of the known world leading to a closer examination of Macedonian customs and mores.

Alexander the Great
As Alexander the Great moves furthers into Asia, he starts to take on more barbaric practices. Although this endears him to his new subjects, the Macedonians becomes angered with him. He starts to wear a mix of Persian and Median wear, began training 30,000 non-Macedonian boys to learn Greek and be trained in Macedonian weapons, his marriage was seen by the non-Macedonians as something to derive confidence from, killed a friend for speaking plainly, and gave positions of honours to Persians.

Customs
Premarital sex is something that is seen as proper whilst sex during marriage is seen as shameful to the Macedonians.

Location
Macedon due to its location near the center of the world. Therefore, they are mixed in body and soul. “They are leaders because of Ares, freedom-loving, autonomous, democratic, law-abiding, lovers of learning and contests, and clear in their daily habit… and are social, fond of strangers, lovers of justice and literature and well-practiced in public speaking”. Furthermore, they are not mild-mannered, unsocial customs and are obsessed with gain.

Royal Family
The royal house of Macedon was seen as of Greek descendent because the governors of the Olympic Games ruled that they could compete in them when the other contestants protested they were non-Greeks and could not compete. Two examples: Perdiccas and the entering of his horses and an ancestor of Alexander the Great, Alexander entering a foot race. Greek through blood.

To Demosthenes although Philip of Macedon is partaking in Greek panhellenic rights, that should demonstrate the Greekness of the Macedonian Royal Family, they are not in fact Greek. They are barbarian although he presides over the Pythian Games, he holds Thermopylae, and he holds the right to consult the oracle first. This means he should be seen as Greek but Demosthenes does not think he is.