"'Many lords and warriors, and many fair and valiant women, are named in the songs of Rohan that still remember the North. Frugmar, they say, was the name of the chieftan who lead his people to Éothéod. Of his son, Fram, they tell that he slew Scatha, the great dragon of Ered Mithrin, and the land had peace from the long-worms afterwards. Thus Fram won great wealth, but was at feud with the Dwarves, who claimed the hoard of Scatha. Fram would not yield them a penny, and sent them instead the teeth of Scatha made into a necklace, saying: "Jewels such as these you will not match in your treasures, for they are hard to come by." Some say that the Dwarves slew Fram for this insult. There was no great love between Éothéod and the Dwarves.

'Léod was the name of Eorl's father. He was a tamer of wild horses; for there were many at that time in the land. He captured a white foal and it grew quickly to a horse strong, and fair, and proud. No man could tame it. When Léod dared to mount it, it bore him away, and at last threw him, and Léod's head struck a rock, and so he died. He was then only two and forty years old, and his son a youth of sixteen.

'Eorl vowed that he would avenge his father. He hunted long for the horse, and at last he caught sight of him; and his companions expected that he would try to come within bowshot and kill him. But when they drew near, Eorl stood up and called in a loud voice: "Come hither, Mansbane, and get a new name!" To their wonder the horse looked towards Eorl, and came and stood before him, and Eorl said: "Felaróf I name you. You loved your freedom, and I do not blame you for that. But now you owe me a great weregild, and you shall surrender your freedom to me until your life's end."

'Then Eorl mounted him, and Felaróf submitted; and Eorl rode him home without bit or bridle; and he rode him in like fashion ever after. The horse understood all that men said, though he would allow no man but Eorl to mount him. It was upon Felaróf that Eorl rode to the Field of Celebrant; for that horse proved as long lived as Men, and so were his descendants. These were the mearas, who would bear no one but the King of the Mark or his sons, until the time of Shadowfax. Men said of them that Béma (whom the Eldar call Oromë) must have brought their sire from West over Sea."

Source: The Return of the King by J.R.R. Tolkien
Appendix A
Copyright 1994 by Christopher R. Tolkien, John F.R. Tolkien, and Priscilla M.A.R. Tolkien