So far nobody has come close but I think your guesses are Interesting (Not it) and Ingenius (not it). I eliminated two options for you. Keep at it and I will keep watching to see if somehow somebody does get it.
How about Isengard? Because it spanned multiple ages (editions) and returned to the united kingdom of Aragon King Elissar (Monte Cook? Mike Mearls? ). And because it alludes to the "one ring (edition) to rule them all..."