One theory suggests that the Armens were of Thracian origin, and related to the Phrygians. The Armens were near the head waters of the Halys, to the west of the Euphrates. The Armens seemed to have mixed blood with another Asiatic element whose patronymic Hai, became in time their national designation. The country where the Armens settled were a mountainous region, traversed by deep valleys and smiling plains.