"Then Fëanor swore a terrible oath. His seven sons leapt straightway to his side and took the selfsame vow together, and red as blood shone their drawn swords in the glare of the torches. They swore an oath which none shall break, and none should take, by the name even of Ilúvatar, calling the Everlasting Dark upon them if they kept it not; and Manwë they named in witness, and Varda, and the hallowed mountain of Taniquetil, vowing to pursue with vengeance and hatred to the ends of the World Vala, Demon, Elf or Man as yet unborn, or any creature, great or small, good or evil, that time should bring forth unto the end of days, whoso should hold or take or keep a Silmaril from their possession.
Thus spoke Maedhros and Maglor and Celegorm, Curufin and Caranthir, Amrod and Amras, princes of the Noldor; and many quailed to hear the dread words. For so sworn, good or evil, an oath may not be broken, and it shall pursue oathkeeper and oathbreaker to the world's end."
J. R. R. Tolkien, The Silmarillion, Ch. 9: Of the Flight of the Noldor
left to right: Amrod and Amras (they're hard to tell apart in this light), Fëanor, Curufin (always the first to obey his father), Maglor (not really conviced but caught up in the moment), Maedhros (taking charge of keeping his brothers in line while Atar is busy), Caranthir, Celegorm.
"They came at unawares in the middle of winter, and fought with Dior in the Thousand Caves; and so befell the second slaying of Elf by Elf. There fell Celegorm by Dior's hand, and there fell Curufin, and dark Caranthir; but Dior was slain also, and Nimloth his wife, and the cruel servants of Celegorm seized his young sons and left them to starve in the forest. Of this Maedhros indeed repented, and sought long for them in the woods of Doriath; but his search was unavailing, and of the fate of Elured and Elurin no tale tells."
J. R. R. Tolkien, The Silmarillion: The Ruin of Doriath
Yet another commission for the ever-wonderful ~flyingfish98. This interpretation was heavily influenced by a conversation with ~suzene from a few years ago, in which she brought up an idea that I'd never thought about and that completely broke my heart - that the boys heard Maedhros calling for them but still hid from him, more afraid of the one who had slaughtered their parents than they were of the dangers of the forest.