[Gothmog]

Haven't the sons of Feanor attacked any fellow elves with the exception of Celegorm and Curufin? Wasn't all the sons in on the first kinslaying of Alqualonde? And were not all the brother's present in Doriath when it was attacked? As all but the dead Curufin, Celegorm and Caranthir was present at the battle at the mouth of Sirion? And at last, Maedhros and Maglor was alone in the last slaying at the time of the Silmaril-theft.

And as for the claim of the Silmaril, that can be discussed. One may think that if someone brings back a jewel from the deeps of Angband, from the crown of the Dark Lord himself, then that gives you the right to own the jewel in question. The brothers had forsaken their right to the Silmarils, which was proved when they finally got their hands on them and was tormented by the very touch.

One thing is different from the "real" version: when Maedhros and Maglor were the only survivors of the brother's, the Silmarils in centre of the disagreement was the two from the overthrown Morgoth's crown. Now it's the Silmaril of Elwing.
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The text above was written as a respons to arcticstorm's post, but now I see Ang has finally stepped forward to defend his dear Maedhros.

To have Elwing hand over the jewel of free will is a good idea. But how will Earendil get to Valinor to raise the Host of Valar in the coming war? And do you really think Mablung has that power? If Elwing wanted to hand over the Silmaril to Maedhros, she'll do that whatever Mablung says. And I doubt he would go as far as kinslaying to get it back if it was given to the last sons of Feanor. He was never such an important character in the Quest. Sure, he will resent giving it up but I can't imagine his words stopping Elwing if she wants to give it away. If we evict Maedhros she will either give it to Maglor or keep it. Either way, we win.