Tayichiud

The Taichuud (; ) was Mongol subclan of the Kiyat Borjigin and one of the three core tribes of the Khamag Mongol confederation in the Mongolian Plateau during the 12th century, its first recorded with Ambaghai Khan in 1148 AD, however this clan founded by Ambaghai's grandfather Chirhya Lynhua who was the son of Khaidu Khan who was the foundation of Khiyad or, Kiyat Clan, so both can be the founder of Tayichuids, and finally ended with Sultan Husayn Tayichud in 1405 AD.

==Tribal arrangements== thumb|Mongol Empire c.1207, Tayichiud and their neighbors alt=|center|frame|Tayichud and Descent from Genghis Khan|Chenghisid geneologican charts. They lived in the southern part of current Zabaykalsky Krai and the Mongolian Dornod Province. Though the Khiyad Borjigids and the Tayichiuds were closely related and shared a common ancestor in Bodonchar Munkhag, at times they were arch-rivals for the rule of the Khamag Mongol. Though Khabul Khan of the Borjigin had 7 sons, he had designated Ambaghai, a son of Sengum Bilge of the Tayichiud, as his successor. Thus Ambaghai Khan became the second khan of the Khamag Mongol. The rule of the Mongols had alternated between the Borjigid and the Tayichiud tribes, finally coming into the hands of Genghis Khan of Borjigid.