Those three are Orders, as in social constructs for people of a certain vocation, not political constructs like countries/empires. These Orders exist throughout Cronos, and the guys you mean were the leaders of the Orders in another country/empire far to the East. The Thovnosian Empire has these same social structures (the three Orders), but the leaders are different and most of this empire has only been lightly touched by Korax' armies before his defeat. This is one of the reasons Daedalon settled down here after the last battle, as he wanted to get away from all the desolace and destruction on the other side of the continent.