§ Of the Return of the Noldor The Silmarillion

When twenty years of the Sun had passed, Fingolfin King of the Noldor made a great feast; and it was held in the spring near to the pools of Ivrin, whence the swift river Narog rose, for there the lands were green and fair at the feet of the Mountains of Shadow that shielded them from the north. The joy of that feast was long remembered in later days of sorrow; and it was called Mereth Aderthad, the Feast of Reuniting. Thither came many of the chieftains and people of Fingolfin and Finrod; and of the sons of Fëanor Maedhros and Maglor, with warriors of the eastern March; and there came also great numbers of the Grey-elves, wanderers of the woods of Beleriand and folk of the Havens, with Círdan their lord. There came even Green-elves from Ossiriand, the Land of Seven Rivers, far off under the walls of the Blue Mountains; but out of Doriath there came but two messengers, Mablung and Daeron, bearing greetings from the King.