Örüg Temür Khan, possibly also known by his nickname as Guiranchi,東京外国語大学. アジア・アフリカ言語文化研究所-アジア・アフリカ言語文化研究, Issues 27–30, p. 152. was a khagan of the Northern Yuan dynasty, reigning from 1402 to 1408. Örüg Temür, in historical materials compiled by the Timurid dynasty, has been a descendant of Ögedei.C. P. Atwood-Encyclopedia of Mongolia and the Mongol Empire, list of heads of Mongolia He might also be descended from either Ariq Böke or Genghis Khan's younger brothers—either Hasar or Temüge.List of Mongolian rulers
Elbeg Khan appointed Bahamu (Batula, Mahamu, Muhamud) ruler of the Four Oirats after he had mistakenly executed his father Khuuhai. The Khagan's decision disappointed the Oirat Torguud clan leader Ugechi Khashikha (; , "Khashikha" means prince or duke in the Tungusic languages). Ugetchi Khashikha and Bahamu organized the plot to kill Elbeg and succeeded; the former seized the family and property of the late Khagan. There's a dispute over whether Örüg Temür was the same person as Ugechi Khashikha himself, because the Ming Dynasty recorded fierce battles between Guilichi of Eastern Mongols and Oirat's leaders.岡田英弘『モンゴル帝国から大清帝国へ』(藤原書店 p.368) Thus, it is still unclear whether he was an Oirat or a Genghisid. The History of Ming recorded that Guilichi became the new khagan in 1402 and abolished the dynastic title of "Great Yuan" (大元) promulgated in 1271 by Kublai; however, the Han-style title had already been abolished in 1388.
Reign Guilichi appointed Arughtai of the Asud chingsang of the Eastern Mongols. According to Ming annals, he might have nominated a “Tatar” (East Mongols) khan. The Yongle Emperor made overtures to Guilichi and his principal retainer Arughtai to establish a relationship within Ming China's tributary system, but Guilichi and Arughtai rejected it.Ed. Denis Crispin Twitchett, John King Fairbank-The Cambridge history of China, Volume 2; Volume 8, p. 227. They also poisoned Engke Temur, Prince of Hami, who had allied with the Ming. However, Guilichi was defeated by Öljei Temür Khan, the Kublaid descent Borjigin monarch, in 1403. In 1408, his former chingsang and noyan Arughtai killed him after a conflict erupted between them.
See also List of khans of the Northern Yuan dynasty
Notes
References
Further reading René Grousset – Empire of Steppes Ж.Бор – «Монгол хийгээд Евразийн дипломат шаштир» БОТЬ 3