What did boromir do in rivendell?

[Belegorn]

Originally Posted by Tuor in Gondolin

You'd think Boromir would have liked to learn of his great-great-great(etc.) grandfather from his uncle Elrond. And of course tales of Numenor. Of course, there's that Aragorn problem to be taken care of (sort of like taking care of that Jim Rockford- tv series- problem).

I doubt Boromir and Elrond are related as Elrond is to Aragorn. Keep in mind the words of Faramir, "We of my house are not of the line of Elendil, though the blood of Numenor is in us. For we reckon back our line to Mardil, the good steward, who ruled in the king's stead when he went away to war. And that was king Earnur, last of the line of Anarion, and childless, and he came never back. And the stewards have governed the city since that day, though it was many generations of Men ago." [TTT, p. 328]