The wide land of fields and fens that lay north of the White Mountains had historically fallen within the boundaries of Gondor, whose people called that region by the name Calenardhon. After Steward Cirion granted Calenardhon to Eorl's people, the Éothéod, the land was given a new name. It was Cirion's son, Hallas, who is credited with inventing the name Rochand, from the Elvish for 'horse-land'. That name mutated into the intermediate form Rochann, until it ultimately resolved into the form used at the end of the Third Age, Rohan, the land of the Rohirrim.