The second son of Fëanor, who inherited more of his mother Nerdanel's gentle spirit than any of his brothers. Maglor was famed as a poet and bard, but he took the Oath of Fëanor in Tirion and shared in the woes that came of it.
After the Nirnaeth, only four of Fëanor's seven sons survived; Maglor, the eldest son Maedhros, and the two youngest brothers Amrod and Amras. After some years had passed, these four came to learn that a Silmaril was held by Elwing at the Mouths of Sirion, and though they restrained themselves for some time, their Oath compelled them to take back the Jewel. So they assaulted their fellow Elves, and Elwing escaped with the Silmaril across the Sea to her husband Eërendil, and together they sailed into the West. That voyage would in time bring about the downfall of Morgoth.
After the destruction of Morgoth, the last two Silmarils were recovered from his Crown. By this time, only Maedhros and Maglor remained of Fëanor's sons, and Maglor came close to repenting the Oath. Wearily, he accompanied his brother in the theft of the Silmarils, but their evil deeds in recovering them meant that the holy Jewels burned their skin. Maedhros in despair leapt into a fiery fissure, and Maglor, the last of the Sons of Fëanor to survive, cast his Silmaril into the Sea. Legend says that he still wanders the shores of the World, singing laments for his despair and regret.
I was also the one who took pity on Elrond and Elros and let them go.
I'm so sorry for everything, I've come to make amends.