| Yi Cha-hŭng | |||||||||||||||||||||||||||||||||||||||||
| Grand Prince of Joseon (posthumously) | |||||||||||||||||||||||||||||||||||||||||
| Spouse: | Lady Cho of the Hanyang Cho clan[1] | ||||||||||||||||||||||||||||||||||||||||
| Issue: | Yi Kyo-ju Yi Chong-ryong Yi Chŏn-gye[2] | ||||||||||||||||||||||||||||||||||||||||
| Issue-Type: | Biological Adoptive | ||||||||||||||||||||||||||||||||||||||||
| Royal House: | Yi | ||||||||||||||||||||||||||||||||||||||||
| Father: | Yi Ch'un | ||||||||||||||||||||||||||||||||||||||||
| Mother: | Lady, of the Munju Bak clan | ||||||||||||||||||||||||||||||||||||||||
| Birth Name: | Yi Cha-hŭng | ||||||||||||||||||||||||||||||||||||||||
| Birth Date: | 1305 | ||||||||||||||||||||||||||||||||||||||||
| Birth Place: | Goryeo | ||||||||||||||||||||||||||||||||||||||||
| Death Date: | before 1371 | ||||||||||||||||||||||||||||||||||||||||
| Death Place: | Goryeo | ||||||||||||||||||||||||||||||||||||||||
| Place Of Burial: | Gwiju-dong, Hamheung | ||||||||||||||||||||||||||||||||||||||||
| Posthumous Name: | Grand Prince Wanchang (완창대군, 完昌大君; given in 1872 by King Gojong) | ||||||||||||||||||||||||||||||||||||||||
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Yi Cha-hŭng[3] (born 1305), posthumously known as Grand Prince Wanchang, was a late Goryeo period second rank official [4] who became part of the early Joseon royal family member as the first and oldest son of Yi Ch'un, making him uncle to Yi Sŏng-gye, its founder.[5]
He studied under the tutelage of U T'ak as one of his students. Yi served the Yuan dynasty as a chiliarch.[6] After his nephew, Yi Sŏng-gye established the new dynasty, Yi Cha-hŭng was posthumously given the office of the minister of military affairs and on 9 March 1871, Yi was given Posthumous name Jeonggan . In 1872, Emperor Gojong of Korea gave him a posthumous name as Grand Prince Wanchang and was enshrined in Yeongjongjeonggyeong alongside his parents.[7] Their tomb located at Gwiju-dong, Hamheung.