Ikonicre

ah-TRAY-dees sounds about right to me. Though I wouldn't bother to put in the extra -a- to get the extra space between trei- and -des. By comparison, Achilles is pronounced ah-KILL-ees, Herakles HER-ah-klees, Hades HAY-dees and so on... At least, that's the accepted english pronunciation. It may differ in actual greek, but FH didn't intend that I'm sure.

In dutch 'na' means after; after the fact; following.. na-baron could in said context mean 'after'-baron, the direct heir of a baron One of the few terms that have a distinct dutch ring to it in the duniverse; another one would be the Landsraad.