Arnorian successor states? 3 or more

[Dúgorin]

Originally Posted by jallanite

It seems to me that the text is referring to Cardolan and Rhudaur as “lesser realms” only in comparison to Arthedain, which is the largest kingdom descended from the territory earlier called Arnor.

Yes, that's what I gathered, that they were "lesser" than Arthedain, but "CHIEF of these lesser realms" would imply that Cardolan & Rhudaur were the greatest of multiple other successor realms