Ki Ch'ŏl (Korean: 기철; Hanja: 奇轍; died June 16, 1356[a]), also known by his Mongolian nameBayan Buka,[1] was a political figure and nobleman in the late Goryeo dynasty. After his younger sister, Empress Gi who was the wife of Toghon Temür[2] giving birth to a prince, Ki Ch'ŏl was then honoured as Internal Prince Deokseong.[3]
Ki received a government post from the Yuan dynasty and appointed as the Grand Minister of Education or da situ (大司徒) in 1340. In 1353, Ki was appointed as a manager of the Liaoyang Branch Secretariat.[4] Since the Haengju Ki clan was regarded as a powerful family in Goryeo, he was given preferential treatment with or equal to that of the Goryeo ruler during his stay in Yuan. On June 16, 1356, Ki was invited to a palace banquet by King Gongmin himself, but as soon as he entered it, the king accused him and Kwŏn Kyŏm, both members of the pro-Yuan faction, of plotting treason and conspiracy, and they were arrested and executed them on the spot.[5][6] Ki Yu-gŏl and Öljei Buka were also killed by the king's orders. This event is present-day known as "Byeongsin coup" in Korean history.
^Robinson, David M. (2009). Empire's twilight: northeast Asia under the Mongols. Cambridge, Mass: Harvard University Asia Center for the Harvard-Yenching Institute : Distributed by Harvard University Press. p. 125. ISBN9780674036086.
^Robinson, David M. (2022). Korea and the fall of the Mongol Empire: alliance, upheaval, and the rise of a new East Asian order. Cambridge (GB): Cambridge University Press. p. 134. ISBN9781009106672.
^Robinson, David M. (2009). Empire's twilight: Northeast Asia under the Mongols. Cambridge (Mass.): Harvard university Asia center for the Harvard-Yenching Institute. p. 118. ISBN9780674036086.
