Vlach is a blanket term covering several modern Latin peoples descending from the Latinised population in Central, Eastern and Southeastern Europe. English variations on the name include: Wallachians, Walla, Wlachs, Wallachs, Vlahs, Olahs or Ulahs. Groups that have historically been called Vlachs include: modern-day Romanians or Daco-Romanians, Aromanians or Macedo-Romanians, Morlachs, Megleno-Romanians and Istro-Romanians. Since the creation of the Romanian state, the term in English has mostly been used for those living outside Romania.
Contributions by Alex earlier account, Bogdangiusca, and Greier.