Illyria is a region of the the Wrath Plains which is dominated by many warlords and petty kingdoms. Illyria use to be like any of the other kingdoms but fell into decay centuries ago when a disgruntled members of the guard killed the royal family. The former Dukes of Illyria used the anarchy to settle long stranding grievances against each other and resisted attempts by the Emperor to place a relative of his on the throne of Illyria and the Emperor was unwilling to impose his will by force.
In the time since the Dukes were replaced and none have lasted the test of time, being replaced several times over by petty kings and Warlords. The region has been heavily raided by orcs from the Throwing Stones and also many of the Warlords are in conflict with the Dwarven Confederacy.