Yi Chahŭng
| Yi Chahŭng | |||||
|---|---|---|---|---|---|
| Grand Prince of Joseon (posthumously) | |||||
| Born | Yi Chahŭng 1305 Goryeo | ||||
| Died | before 1371 Goryeo | ||||
| Burial | Gwiju-dong, Hamheung | ||||
| Spouse | Lady Cho of the Hanyang Cho clan | ||||
| Biological Adoptive | Yi Kyo-ju Yi Chong-ryong Yi Chŏn-gye | ||||
| |||||
| House | Yi | ||||
| Father | Yi Ch'un | ||||
| Mother | Lady, of the Munju Bak clan | ||||
| Korean name | |||||
| Hangul | 이자흥 | ||||
| Hanja | 李子興 | ||||
| RR | I Jaheung | ||||
| MR | I Chahŭng | ||||
| Royal title | |||||
| Hangul | 완창대군 | ||||
| Hanja | 完昌大君 | ||||
| RR | Wanchang daegun | ||||
| MR | Wanch'ang taegun | ||||
| Art name | |||||
| Hangul | 취헌 | ||||
| Hanja | 翠軒 | ||||
| RR | Chwiheon | ||||
| MR | Ch'wihŏn | ||||
| Courtesy name | |||||
| Hangul | 성첨 | ||||
| Hanja | 聖瞻 | ||||
| RR | Seongcheom | ||||
| MR | Sŏngch'ŏm | ||||
| Posthumous name | |||||
| Hangul | 정간 | ||||
| Hanja | 貞簡 | ||||
| RR | Jeonggan | ||||
| MR | Chŏnggan | ||||
Yi Chahŭng (born 1305), posthumously known as Grand Prince Wanchang, was a late Goryeo period second rank official (좌윤; 左尹) 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.
He studied under the tutelage of U T'ak as one of his students. Yi served the Yuan dynasty as a chiliarch (천호; 千戶). After his nephew, Yi Sŏng-gye (이성계) established the new dynasty, Yi Chahŭng was posthumously given the office of the minister of military affairs (병조판서; 兵曹判書) and on 9 March 1871, Yi was given the posthumous name Chŏnggan (정간; 貞簡). In 1872, Emperor Gojong of Korea gave him a posthumous name as Grand Prince Wanch'ang (완창대군; 完昌大君) and was enshrined in Yŏngjongjŏnggyŏng (영종정경; 領宗正卿) alongside his parents. Their tomb located at Gwiju-dong, Hamheung.