The tribe is described as the most powerful tribe in the province of Kermanshah and the surrounding region, and also described as "one of the most ancient, if not the most ancient, of the tribes of Kurdistan".
The Kalhoris were mentioned by Sharaf-al-Din Bedlisi in the late 16th century,[8] according to whom, the chiefs of the Kalhor claimed to be descended from Giv, the son of Goudarz (q.v.), a major hero in the Shahnameh.[9]
^Arjomand, Said Amir (1988). The Turban for the Crown: The Islamic Revolution in Iran. Oxford University Press. p. 56. ISBN9780195042580. Furthermore, the Kalhor Kurds in the west, the Turkman tribes in the northeast and the Baluch in the southeast were showing clear signs of open insubordination
