The Widow Harun
The modern realm of Narfell is one of the nations of The Unapproachable East, located in the shadow of The Great Glacier just west of Rashemen. Historically, Narfell was an enormous sorcerous empire contemporary with Raumathar, against which it fought a long struggle for control of the area of modern Rashemen. The saga of their apocalyptic mutual destruction has left a legacy of extensive ruins and bizarre magical effects across the northern part of The Eastern Realms, just as the fall of ancient Imaskar marked the southern portion.
Narfell is described in much more detail in the Forgotten Realms core books and supplements. Please consult these if you wish to learn more.