Although this topic seems to be irrelevant it may not be so. What exactly the nationality of Vlachs is, historically speak- ing, is an open question. The ones living in Greece consider themselves Greeks, and no one is going to object to what they be- lieve for themselves. Among them one can count the national benefactors Averof and Tositsas.
In the beginning of this century there was a controversy of what the nationality of the Vlachs really was. Since the Vlachs used a Latin oriented language it was claimed that they were of Romanian nationality (that is, the nationality of the people living in Romania).
A Greek historian, N Kazazes, early this century, wrote that a Romanian politician once said "The Romanian people had desires on the beautiful Transylvania, where so many Romanians were living. But this was impossible be- cause our relations with the AustroHungarian empire would have been jeopardised. So the non-existent subject of the Romanians in Macedonia was invented." (Source: "The Macedonian Problem" by N. Kazazes, 1907,page 105).
The 'Romanian Vlachs' question was invented mainly by Gustav Weigand. According to him the Vlachs were considered Romanians (and not say Romans, of the Roman empire) because the Vlachs were using a greco-latin dialect.
Other historians of that time, such as Momsen, Krumwacher(sp?), and Korting dismissed such claims. Edward Stanford wrote in 1877 that Greek-Vlachs were to Greeks what Welsh were to English.
No matter how you call them (the Greek Vlachs) be it Romans or Romanians or Vlachs they call themselves Greeks.
An additional reason for the "romanisation" of the Vlachs was the desire of the Romanians to use them in their negotiations with the Bulgars related to the future of the area of Dobrucha. The Romanians would have favored the idea to 'transfer' their claims on the Vlachs to Bulgaria in exchange for Bulgars granting them rights on that region. This was mentioned by a Romanian Prince, Brancovan, in a book of his.
Taken from Frequently Asked Questions on Macedonia