Conversation so far:
What are the circumstances of the origin of the Vlachs?
Vlachs were initially identified and described during the 11th century by George Kedrenos. According to one origin theory, modern Romanians, Moldovans and Aromanians originated from Dacians.

Question: What is notable or interesting about them?
Self-contained rewrite: What is notable or interesting about the Vlachs?