The Isle of Celtia is a small Island off of Eire. Your area, on the Island has only on strip of land connecting it to the rest of Island, but the other peice of the Island isn't under your reign, and you need not worry about governing it, only when they (Britons) try to invade you. Mostly natives live here, but they aren't a problem. It has good farmland, and lots of fishing spots. In your province there are many wonderful places for docks, warfs, or shipyards.
The main problem should be governing, and trying to protect your people from the wolves, and sometimes even, the natives! Rome Provides the Food, so Granarys aren't necisary. It is quite a hard assignment, in the Northern Provinces. Few recourses, *but* many, many trading partners.