Arthair

Arthair was one of the Five Kingdoms of Cúigear that now makes up one of the five provinces of the Vairedanian Empire. Lying on the western edge of the continent, Arthair is the cultural powerhouse of the Empire. Containing the city of Carthacht, and bordering Móndelrona and Juudunia the province of Arthair is incredibely diverse which allows it to easily foster new cultures and ideas. It also contains a multitude of historical sites from the The War of Provenance from back during The Age of War.
Arthairian culture (unless specifically made up for this setting) is inspired by real life old Ireland and its culture. For purposes of character and world building, anything that originates from Arthair can be named or inspired by that culture and fit the setting.