There is a place called Moffat. I haven't heard that one though I've read other stuff by Moffat when I was at uni. If you are interested in Arthur's knights and all that, you should have a read of Finding Merlin by Adam Ardrey. Good read.
Yeah I think there definitely should be more in the way of geography in the battle maps.
I would settle for the ability to place specific custom made battle maps into the campaign at a specific place/settlement (I don't know if that is going to be possible in the modding of Thrones of Britannia). It's obvious CA don't have the time/want to make a wider variation of siege maps but I'd love to be able to try recreate some of the cool places that exist (like Dumbarton Rock below)
On a side note I have an idea for CA (maybe to expensive to pay someone to do this) pay for someone to go about and map the castles and forts (whats left of the major ones in the map) with a drone. I have mapped castles before, takes 15 minutes and then you can export it as a 3D model/point map. Would seem like a cool/relatively pain free way to get a very accurate representation into game.