Old Great Bulgaria
In the early 7th century AD, what are today the communes of Isernia as well as Bojano and Sepino were the places where Grimoald I of Benevento settled a group of Bulgars, seeking refuge from the Avars; the Bulgars were for many generations a distinctive part of the population, until finally assimilated in their Italian environment (see Bulgarians in Italy, Old Great Bulgaria#Bulgars in Southern Italy).