Ersari appear to have been major component of the Sayin Khan Turkmen tribal confederacy whose Yurt (nomadic territory), in the late 13th, 14th, 15th, 16th and 17th centuries, stretched from the Balkan mountains to the Mangishlaq peninsula and north to the Emba river.The label Sayin Khani, given to these Turkmen by the other peoples around, referred to their emergence from the breakup of the Golden Horde, (founded by Genghis Khan's grandson Batu, known as the Sayin Khan), in order to differentiate their origins from tribes that came from the territories of Hulegu (Iran) or Chaghatay (Trans-Oxanian Central Asia).[citation needed] The Sayin Khani Turkmens appear to have been an organized confederation of tribes said to be divided, in typical Turco-Mongol fashion, into two parts, the Ichki (inner) and Tashki (outer) Oghuz.Abu al-Ghazi Bahadur, the Uzbek Khan of Khiva in the 17th century, in his book Shajara-i Tarākima ("The Genealogical Tree of the Turkmen", 1659) does not indicate whether the term Tashki refers to an organizational, military or purely geographical meaning.Sometime in the 17th century, in part to the drying up of the western Uzboy channel of the Amu Darya, the Ersari and its major subtribes moved east to the banks of the main course of the Amudarya.
Ersari
gul
(pattern) as depicted on the Turkmen flag and arms