The Torghut (Mongolian: Торгууд/Torguud, "Guardsman" or "the Silks") are one of the four major subgroups of the Four Oirats. The Torghut nobles traced its descent to the Keraite ruler Tooril also many Torghuts descended from the Keraites.
They might have been kheshigs of the Great Khans before Kublai Khan. The Torghut clan first appeared as an Oirat group in the mid-16th century. After the collapse of the Four Oirat Alliance, the majority of the Torghuts under Kho Orluk separated from other Oirat groups and moved west to the Volga region in 1630, forming the core of the Kalmyks. A few Torghut nobles followed Toro Baikhu Gushi Khan to Qinghai Lake (Koke Nuur), becoming part of the so-called Upper Mongols. In 1698, 500 Torghuts went on pilgrimage to Tibet but were unable to return. Hence, they were resettled in Ejin River by the Kangxi Emperor of China's Manchu Qing dynasty. In 1699 15,000 Torghut households returned from the Volga region to Dzungaria where they joined the Khoits. After the fall of the Dzungar Khanate, one of their princes, Taiji Shyiren, fled west to the Volga region with 10,000 families in 1758. The name Torghut probably originates from the Mongolian word "torog" meaning "silk."
Due to harsh treatment by Russian governors, most Torghuts eventually migrated back to Dzungaria and western Mongolia, departing en masse on January 5, 1771. While the first phase of their movement became the Old Torghuts, the Qing called the later Torghut immigrants "New Torghut". The size of the departing group has been variously estimated between 150,000 to 400,000 people, with perhaps as many as six million animals (cattle, sheep, horses, camels and dogs). Beset by raids, thirst and starvation, approximately 85,000 survivors made it to Dzungaria, where they settled near the Ejin River with the permission of the Qing Manchu Emperor. The Torghuts were coerced by the Qing into giving up their nomadic lifestyle and to take up sedentary agriculture instead as part of a deliberate policy by the Qing to enfeeble them.
A group of around 70,000 Torghuts were left behind in Russia, since (according to legend) the Volga River was not frozen and they could not cross it to join their comrades. This group became known as the Kalmyk, or "remnant", although the name may predate these events. However, Muslims called the Kalmyks before. In any case, the remnant population doubling their numbers by 1930. Torghut-Kalmyk archers under the command of the notable Russian general Mikhail Kutuzov clashed with the French army of the legendary Napoleon in 1812. In 1906, the Qing put western Mongolia's New Torghuts under the Altai district. One New Torghut prince opposed independence in Mongolia and fled to Xinjiang in 1911-12. However, the others were reincorporated into Mongolia's far western Khovd Province.
Johan Elverskog-Our Great Qing:The Mongols, Buddhism and the State in Late Imperial China ISBN 0-8248-3021-0
Wang Jinglan, Shao Xingzhou, Cui Jing et al. Anthropological survey on the Mongolian Tuerhute tribe in He shuo county, Xinjiang Uigur autonomous region // Acta Anthropologica Sinica. Vol. XII, № 2. May, 1993. p. 137-146.
Санчиров В. П. О Происхождении этнонима торгут и народа, носившего это название // Монголо-бурятские этнонимы: cб. ст. — Улан-Удэ: БНЦ СО РАН, 1996. C. 31—50. - in Russian
[hamagmongol.narod.ru/library/khoyt_2008_r.htm Хойт С.К. Антропологические характеристики калмыков по данным исследователей XVIII-XIX вв. // Вестник Прикаспия: археология, история, этнография. № 1. Элиста: Изд-во КГУ, 2008. с. 220-243.]