[Marileangorifurnimaluim]

I like the idea of it being Earendil in that vision, very poetic, but I suspect Scapegoat is correct and it refers to Aragorn and the star of the high kings of Gondor.

But the poetic intimations and references of this passage are rich, implying Aragorn will be taking up the heritage of his ancestors, including Earendil. So in that sense, whoever picked up on that reference is correct.

It also implies in the image that he will be very nearly (but not quite, he's walking on the ground so it's a slightly more earthbound image) of the stature of Earendil, nearly as great.