The name of the town suggests that these people may be of Yaka tribe from Mangyshlak Peninsula at the east coast of Caspian Sea, now in Kazakhstan.
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Many Choudur appear to have stayed on the Mangyshlak Peninsula from then through the Timurid and the Shaybanid Uzbek periods, beginning the Turco-Mongol transformation of these originally Turko-Iranian people.
The Kalmuks moved into the Mangyshlak Peninsula, the Sayin Khan confederation broke up and the Choudur ended up southeast of Khiva loosely confederated, but under the authority of the Yomud.