Note: Do not rely on this information. It is very old.
Goklans
Goklans, a large division of the Turkoman people, whose territory lies in the Upper Attrek and Gurgan river valleys between Kizil Arvat and Askabad on the Russo-Persian frontier. Chief taife (subdivisions): Chakir, Begdli, Kazi, Karabalkan, Kyruk, Bajindir, and Yangak, including a branch in the Persian province of Mazandereln.