Vlachs in medieval Bosnia and Herzegovina
Vlachs in medieval Bosnia and Herzegovina were a Western Balkans based population descending from a mixture of Romanized pre-Slavic Romance-speaking peoples and the South Slavs. From the 14th century the ethnic meaning of the term "Vlach" was replaced with a more societal understanding, often referring to a specific lifestyle and social structure common to some local Slavic communities.
Source: Wikipedia — Vlachs in medieval Bosnia and Herzegovina (CC BY-SA 4.0)