§ Of the Coming of Men into the West The Silmarillion

Now Hador Lórindol, son of Hathol, son of Magor, son of Malach Aradan, entered the household of Fingolfin in his youth, and was loved by the King. Fingolfin therefore gave to him the lordship of Dor-lómin, and into that land he gathered most of the people of his kin, and became the mightiest of the chieftains of the Edain. In his house only the Elven-tongue was spoken; but their own speech was not forgotten, and from it came the common tongue of Númenor. But in Dorthonion the lordship of the people of Bëor and the country of Ladros was given to Boromir, son of Boron, who was the grandson of Bëor the Old.