As far as I am aware there is no current king of Eire, only the Queen.
The lands are a bit trickier. The chapter is "The Deadlands" which for all purposes is a colloquialism both IG and OOG referring to the land, as it is cursed with undeath and other racial mumbo jumbo. The real name of the land is Learathan (though I always mess up the spelling). In Learathan are several empires with various allegiances. The main ones are Eire (the main PC empire), Sadeen Moor, Thelucia, and Legacy. There are also lands which are contested but not really controlled by any party. The land as a whole used to be known as Syrandor but that was many years ago before the lands became first and became the deadlands as we know it.
Most events take place at a place called Chiram's Hollow, which is one of several Bastions with in Eire. Other common Bastions are Finn Castle, Stone Roost, White Sun, North Fortress and Authen Rai (the capital).
hope that helps.