Chasing A Dream by elkynz
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.
– The Lord of the Rings, Appendix A, II The House of Eorl