Fire Emblem: The Age of Legend
Both a castle-town and the surrounding duchy in northern Yeoria.
Gardnelle is about 10,000 square miles in area, somewhat larger than average. Much of this area though consists of rough and rocky and generally uninhabited slopes of the Minalin Mountains, from which a bit of income is brought in via silver mining but on which no farming can be done. The current ruler, Duke Gardnelle, keeps meticulously accurate census records so the population is known to have been 194,850 or so people when the first snow fell last autumn. Most live as farmers same as elsewhere, though as mentioned there is some mining activity and Duke Grenfeld is always recruiting promising people as soldiers- recommending them to the House of Yeor or the few other dukes he’s on good terms with as guards if he can’t afford to keep them on himself.
It is bordered to the north and east by the Minalin Mountains separating it from Snorivia and the Northern Principalities including Miffin and so the castle is strong and the garrisons ever alert for raids from the warlike northerners. To the west is the duchy of Grenfeld, to the southwest Deruvr and to the south Ikrir.