http://www.freewebs.com/kingdomofcargon ... istory.htm
Not sure exactly what you are looking for, but perhaps "Ardana Hills" could be placed outside of Midian? As this ties in with the location of 'Old Cargonia.'
The link given, gives a detailed account of historical events taken place between Mitrill, Balthildis, and Danegald - the Great Archimage, and the Kingdom of Cargonia
I would love to help if allowed. =)