Gondor and Rivendell

[Errand-Rider Karigan]

That does clear up the question concerning Aragorn/Arwen. But I was reasonably sure Denethor was of relation to the Kings, though perhaps I misread...

Indeed he [Denethor] was as like to Thorongil as to one of nearest kin, and yet was ever placed second to the stranger in the eharts of men and the esteem of his father.

And the line of Hurin was said to be of High Numenor, though I suppose that could mean a lot of things. Perhaps I was mistaken, though it appears both were of High Numenorian blood.