We're building our city right now. Ostensibly Asheville, NC, it's really more covering the entire great smokies region of western north carolina. Someone wanted to play an Autumn Knight, and we thought it fit really well for the area For those who don't know the area, Autumn is VERY important to the economy. It's the main tourist season, and a poor leaf display means economic trouble.
We decided the Autumn Court is still around, but they're based on lurking and fear. They eventually got so good at hiding, they just vanished. Even records and memories of them are sketchy, with smudges, bookworms, stuck pages, and other things conspiring to keep them off the books.
The only concrete proof of their existence is their knight (who is a bit confused about it all), and a freeholding charter admitting the Old Things of the Mountains, under Spearfinger the Witch.