The Players' Guide for Living Greyhawk Scandinavia
From the introduction:
The Principality of Naerie sprawls along the coast of the Azure Sea, south of the Iron Hills and west of the Hollow Highlands. This troubled nation has been known by many names. The Scarlet Brotherhood named it the Obedient State of Idee when they held sway here, but before the Greyhawk Wars it was known as the County of Idee, and was a member of the Iron League. Today it is part of the United Kingdom of Ahlissa, where thousands of armed soldiers maintain vigilance against external and internal enemies.