User blog comment:LOTRMod/Name of Rhúdel Capital City/@comment-30079501-20170209045216

Mistrand isn't horrible, but it just doesn't sound Easterling-ish, either. The other names suggested are OK, but many of them seem rather long and clunky, even if they translate well

I heard the name "Rhunkhost" somewhere. Not sure if this was the intent, but it has the elements "Rhun" and "Ost" in there. Some combination thereof might work well.