Remains of the Fey
Elf-kind in the Celtannian Empire are almost all from Caestland, but there was a time when their people were among the glens of the eastern continent, and they are the original native people of the Celtannian islands. They are well-attuned to nature, and bear within them both savagery and elegance.
Most elves have adopted the Dunnish culture, a product of hundreds of years of forced culturization begun shortly after humanity took the United Kingdoms for their own. Elven clans that follow the old ways always have anti-Dunnish opinions, and plenty of anger for the empire, but there is nothing to be done except retain and carry on. Any possibility for an elven nation is long-shattered.