Not From Hador, but From Such of Their Sons as Goes Not Over the Sea

The original meaning of that sentence was, they may be descended from hador indeed, but if so, then, of course, from those of hador's descendants who did not pass over the sea. So there he doesn't specifically identify which house it's from all three of those, but not from those who went over to numenor. The change from sons to people also addressd kind of a problem in the history - el ross and elrond clearly were not ancestors of the roharen. Well, no, thatis obvious. It's amazing what just a few little words can, i know, completely change in the assumptions we make about them.