| Yi Haeng 이행 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Crown Prince of Joseon | |||||||||
| Tenure | 7 April 1725 – 16 December 1728 | ||||||||
| Predecessor | Crown Prince Yi Yun | ||||||||
| Successor | Crown Prince Yi Seon | ||||||||
| Born | April 4, 1719 Prince Yeoning's private residence, Hanseong, Joseon | ||||||||
| Died | December 16, 1728 (aged 9) Jinsudang Hall, Changgyeonggung, Hanseong, Joseon | ||||||||
| Burial | |||||||||
| Spouse | Crown Princess Hyosun | ||||||||
| Issue | Yi San, King Jeongjo of Joseon (adoptive) | ||||||||
| |||||||||
| Clan | Jeonju Yi clan | ||||||||
| Dynasty | House of Yi | ||||||||
| Father | Yeongjo of Joseon | ||||||||
| Mother |
| ||||||||
| Religion | Neo-Confucianism | ||||||||
| Korean name | |
| Hangul | 효장세자 |
|---|---|
| Hanja | |
| Revised Romanization | Hyojang Seja |
| McCune–Reischauer | Hyochang Secha |
| Birth name | |
| Hangul | 이행 |
| Hanja | 李緈 |
| Revised Romanization | I Haeng |
| McCune–Reischauer | Yi Haeng |
| Courtesy name | |
| Hangul | 성경 |
| Hanja | 聖敬 |
| Revised Romanization | Seonggyeong |
| McCune–Reischauer | Sŏngkyŏng |
| Temple name | |
| Hangul | 진종 |
| Hanja | 眞宗 |
| Revised Romanization | Jinjong |
| McCune–Reischauer | Jinchong |
Crown Prince Hyojang (Korean: 효장세자; Hanja: 孝章世子; April 4, 1719 – December 16, 1728), personal name Yi Haeng (이행; 李緈), was the first son of King Yeongjo of Joseon and his concubine, Royal Noble Consort Jeong of the Hamyang Yi clan. In 1762, 34 years after his death, he became the adoptive father of his half-nephew, the future King Jeongjo.