据历史文献记载，他们是厄鲁特蒙古和硕特部后裔，是一代天骄成吉思汗的子孙。
According to the recordation of historical literature , they are the descendant of Heshuote division of Erlute Mongoliab and offspring of Habu Tusahaer who is the younger brother of great king , Genghis khan .
和硕特部