OoC:
Isle of Ghosts & Khoufayla are from official Birthright. I made a realm out of the two of them (calling it Isle of Ghosts); and the idea behind (at least part of) it could be that pirates (associated with Saere Siendere Shipping) have significant holdings in the realm, taking advantage of the relative isolation of Khoufayla and rumours/realities/etc. associated with the Isle of Ghosts to avoid pursuit/discovery/etc.