http://en.wikipedia.org/wiki/History...ng_in_Sardinia
http://www.coptur.net/nora_en.html
Looks like the island should be a quite important place to hold, on the other side it might be more historically accurate to have Nora as the administrative capital (aka city) in Sardinia and Karali as docks.

I apologize for the quality of the links but it's hard to find accurate online information.