[quote=@The Nexerus]
[@Flagg] I'm looking at two ideas right now. One is a large Orcish tribal empire dominating the area in the centre of Nagath, north and west of the lake, bounded by the rivers. If I took that region, could I name the lake and rivers in question?

The second idea is for a Justinianist kingdom in Nagath's north-west. Specifically, here,
[hider=Potential Map Claim][img]http://i.imgur.com/JxyzI78.jpg[/img][/hider]

If I went with this option, would I have license to say that there is a passage leading over the mountains to allow for direct trade with the Imperium? And would I be allowed to name the bay to the area's east?
[/quote]

Yes to all of your questions. My preference would be for you to go with the orcish empire, but it's your call.