Two provinces of the Khinsai realm of Khourane were warded and seized
by a remarkably high level wizard, and forged into his own realm.

Details in Cities of the Sun, and in Players Secret of Khourane. Has
anyone ever run something in that area?

Khourane is an interesting area, and, as usual, I'd recommend the
guide if you can still find it somewhere as a good read. There are a
few problems ... the former regent is lost at sea, and the problem of
investiture in that case is glossed over.
There are a lot of nice descriptions of provinces, though I
was struck while reading this on how >>> small