Originally Posted by
Madchess
Knights of Erin, Ghetto Nightmare, Dungeon Dwellers have all been arround for over a decade I think, even the scrubs in Devolorian might be that old, there is also Monsters, A Band of Brothers although I think they was not arround for a long time, BOL and Empyreans, Starcraft, Checkmate and Metalic Symphony.
Not sure any of these kingoms have had a consistent core over all the years, or even the same monarch, but they have keept their name and anyone in the warring tier has been up against half of these kingdoms at some point, but if we are talking longest running kingdom name I would guess that a Band of Brothers could be the ones if they have not been away and recently reformed, elsewise Metalic Symphony or Knights of Erin would probably be my guess.