Etrionan civilization

The Etrionan civilization was a civilization of ancient Itonia and eastern Leppia. The Etrionans were a Serephanian ethnic group, part of the Insular Western Eutero-Serephanian branch. Serephanian migrations out of Ancotania eventually brought them to Ithados, where they sailed to Casoria. The Casorian group later returned to the peninsula, founding the Etrionan civilization and expanding to the north.

The Etrionans exerted a significant influence over the Euterian groups that migrated into the area, namely the Itonians and Leppians, who adopted elements of Etrionan culture. They also had favourable relations with the Ancient Delliks, whom they were partially related to.