Also written Önggüd, Onggut, Onggud, and with many variants in Chinese characters, also called "White Tatars" (Bai Dadan 白達旦) to distinguish them from the Mongolian peoples. The Önggüt were a people that is said to be of Uighur or Kirghiz desendance that roamed the eastern part of modern Mongolia from the 10th century on. They were subjects to the Liao 遼 and Jin 金 dynasties and are listed among the federates by the Mongols. During the Jurchen (Jin) period the Önggüt served as outpost guardians at the fortification wall between the Jin empire and the nomad tribes in the Mongolian grasslands. The Önggüt chieftains were allowed to marry Yuan Dynasty 元 princesses, a reward for their loyalty to the Mongols earlier.