Go to your local library and take out the book The Macedonian Conflict Ethnic nationalism in a Transnational World by Loring M. Danforth. This book explains well about this certain situation. Again, this naming dispute isn't about the ancient Macedonians, who were greeks, its about land claims during the balkan wars. Some quotes;
"Competing claims to Macedonia put foward by Serbia, Bulgaria, and Greece, led to the outbreak of the balkan wars in 1912. Wach state attempted to legitimate its territorial claims with arguments concerning the naitonal consciousness, ethnic identity, linguistic affiliation, and religious loyalty of the inhabitants of the area."
"With the establishment of an independant Bulagrian church knows as the Exarchate in 1870, Greece and Bulgaria began to compete openly for the loyalties of the slavic-speaking population of Macedonia, who had either a greek or a bulgarian national consciousness."
"The interwar Serbian (and later Yugoslav) government attempted quite unseccessfully to "serbianize" the slavs of Yugoslav Macedonia, who generally defined themselves as bulgarian."
"During World War two, Tito and the leaders of the Yugoslav communist Party adopted a new policy toward teh slavs of Macedonia. They decided to create a new nationality, the 'macedonian' nationality and they established the ;Peoples republic of Macedonia" in what had previously been known as 'southern serbia' or 'the vardar Banovina'. It was at this time that the name "macedonian" first began to be used to denote a specific ethnic or national group"
If you don't trust this source for whatever reason there is teh Turkish Millet system of governance you could take a look at.
"The basis of the Ottoman censuses was the millet system. People were assigned to ethnic categories according to religious affiliation. So all Sunni Muslims were categorised as Turks, all members of Greek Orthodox church as Greeks, while rest being divided between Bulgarian and Serb Orthodox churches." (wikipedia)
Ottoman census of Hilmi Pasha for the region of Macedonia (1906)
Muslims (Turks and Albanians) 423,000 (41.71%)
Greeks 259,000 (27.30%)
Bulgarians 178,000 (18.81%)
Serbs 13,150 (1.39%)
Others 73,000 (7.72%)
The 1911 edition of the Encyclopædia Britannica gave the following statistical estimates about the population of Macedonia:
- Bulgarians (described in encyclopaedia as "Slavs, the bulk of which is regarded by almost all independent sources as Bulgarians", a statement referring to the controversy between Bulgaria and Serbia as to the national affinities of the Slavs of Macedonia): ca. 1,150,000, whereof, 1,000,000 Orthodox and 150,000 Muslims (called Pomaks)
- Turks: ca. 500,000 (Muslims)
- Greeks: ca. 250,000, whereof ca. 240,000 Orthodox and 14,000 Muslims
- Albanians: ca. 120,000, whereof 10,000 Orthodox and 110,000 Muslims
- Vlachs: ca. 90,000 Orthodox and 3,000 Muslims
- Jews: ca. 75,000
- Roma: ca. 50,000, whereof 35,000 Orthodox and 15,000 Muslims
In total 1,300,000 Christians (almost exclusively Orthodox), 800,000 Muslims, 75,000 Jews, a total population of ca. 2,200,000 for the whole of Macedonia.
My conclusion, to think this "name dispute" is about the ancient macedonians is partly false. This is about the events that happened form teh balkan war until today. The anceint macedonians were draged into this dispute because they were the originators of the name macedonian.
If it were not my purpose to combine barbarian things with things Hellenic, to traverse and civilize every continent, to search out the uttermost parts of land and sea, to push the bounds of Macedonia to the farthest Ocean, and to disseminate and shower the blessings of the Hellenic justice and peace over every nation, I should not be content to sit quietly in the luxury of idle power, but I should emulate the frugality of Diogenes. But as things are, forgive me Diogenes, that I imitate Herakles, and emulate Perseus, and follow in the footsteps of Dionysos, the divine author and progenitor of my family, and desire that victorious Hellenes should dance again in India and revive the memory of the Bacchic revels among the savage mountain tribes beyond the Kaukasos…
- As quoted in "On the Fortune of Alexander" by Plutarch, 332 a-b