Aromanian
The names armân/arumân, just as român/rumân (Romanian), derive directly from Latin Romanus ("Roman") through regular sound changes (see Name of Romania). Adding "a" in front of certain words that begin with a consonant is a regular feature of the Aromanian language.
In Greece variants include arumâni and armâni. An older form of "rumân", was still found in 19th century, in folk songs in Greece. In Albania, the most common form is rămăńi, with occasional forms rumăńi and romăńi.
There's also another form, used especially by the Aromanians of Romania, aromân, which is a modern creation, being a merge between the român form used by the Daco-Romanians and arumân used by the Aromanians in Greece. The form "Aromanian", created by analogy with the word "Romanian", was first used by Gustav Weigand in 1894/1895 to replace terms such as "Macedonian Vlachs" or "Macedo-Romanians".
Read more about this topic: Names Of The Aromanians