Well, you sure stumped us all with that riddle, Legate!
I think that "men of light" does indeed reffer to the Numenorians - doesn't Faramir call them that?
As for "guards of light - of peace" - could it perhaps be refferring to the people of Minas Tirith (guards), once Minas Anor (light)? I don't remember who said it, but they said that "we're just defending our land and our city; we do not want war" (peace)?
If that's true, the person/thing/place in question has to be
very old.
