Easton's Bible Dictionary: M. G. Easton, M.A., D.D.
Dweller in a valley, the son of Eliphaz and grandson of Esau (Gen. 36:12; 1 Chr. 1:36); the chief of an Idumean tribe (Gen. 36:16). His mother was a Horite, a tribe whose territory the descendants of Esau had seized.