Little Ireland

Little Ireland is an independent Continental monarchy which fell under Wulfenbach control, possibly because it was getting fractious with its neighbours. Sleipnir O'Hara, daughter of Little Ireland's king, was taken as a hostage/student onto the Castle Wulfenbach to ensure her father would actually listen when instructions came from the Baron.

Little Ireland is not marked on The Map, which is not known for its fine detail anyway. It could lie almost anywhere, as the Celts were known to have migrated from, roughly, Asia Minor northwest up to the British Isles, and had left pockets of identifiable culture all along that path. The fact that it's called "Little Ireland" with a ruling O'Hara family, however, implies that a group left Ireland (or The Irelands) and retraced ancestral steps, bringing their later-version culture with them.

That Little Ireland was able to build itself into a sufficiently powerful entity (probably due to the Sparkiness of the rulers) to get the Baron's attention implies an admirable amount of tenacity and determination, no matter its geographical size.