Ever since medieval times, the population of Transylvania has been consisting of ethnic
Romanians,
Hungarians (Székely),
Germans (Saxons), Slavs, Bulgarians, Armenians, Jews and Roma (Gypsies).
Intense emigration of Hungarians and Germans under the pressure of Romanian government in the first part of the 20th century and after the fall of communism redistributed the presence of ethnic groups. Currently in Transylvania over 7 million people live, 75% are Romanians, 20% Hungarians, 3% Roma and 1% German.
Among rural Romanians there are some distinct groups based on their ethnicity, geographical presence and connection with nature.
http://www.viatransylvania.com/people-and-lifestyle.html