Wouw,
this forum looks dead... Last activity in spring 2010... that's really sad to see. The wiki, too, has not sparked any interest. What a shame.
I'll ask anyway, maybe there is someone out there.
For the Rhona, the Cyradon book mentions they live in the Land of the Dawn (p. 79). Unfortunately, this is the only time this is mentioned. I assume it's a region in the east of Cyradon, possibly south of the Ischea Forest or maybe south of Janiael.
I guess I'll just improvise it.
Boy, this forum feels so spooky...
Jan