Crown Prince Hyomyeong

• Name — Crown Prince Hyomyeong • Title — King of Joseon (posthumously) Emperor of Korea (posthumously) • Issue — * Heonjong of Joseon • Gojong of Korea (adopted) • Issue Link — #Family • Full Name — Yi Yeong (이영; 李旲) • Dynasty — Yi • Posthumous Name — * Joseon: Crown Prince Hyomyeong (효명세자; 孝明世子) → Great King Gangmok Donmun Hyeonmu Inui Hyomyeong (강목돈문현무인의효명대왕; 康穆敦文顯武仁懿孝明大王) • Korean Empire: Emperor Donmun Hyeonmu Inui Hyomyeong Ik (돈문현무인의효명익황제; 敦文顯武仁懿孝明翼皇帝) • Qing dynasty: Gangmok (강목; 康穆) • Temple Name — Ikjong (익종; 翼宗) → Munjo (문조; 文祖) • House — Jeonju Yi • House Type — Clan • Father — King Sunjo • Mother — Queen Sunwon • Succession — Regent of Joseon • Reign Type — Tenure • Reign — 15 March 1827 – 25 June 1830 • Reg Type — Monarch • Regent — Sunjo • Born — 18 September 1809 • Birthplace — Daejojeon Hall, Changdeokgung, Hanseong, Joseon • Religion — Confucianism (Neo-Confucianism) • Succession1 — Crown Prince of Joseon • Reign1 — 12 August 1812 – 25 June 1830 • Reign Type1 — Tenure • Cor Type1 — Investiture • Coronation1 — Injeongjeon Hall, Changdeokgung • Predecessor1 — Crown Prince Hong • Successor1 — Crown Prince Cheok • Died — 25 June 1830 • Place of death — Heojeongdang Hall, Changdeokgung, Hanseong, Joseon • Burial Place — Sureung, Donggureung Cluster, Guri, South Korea

Yi Yeong was the eldest child of King Sunjo and Queen Sunwon. In 1817, he was admitted to the Sungkyunkwan. In 1819, he was appointed as crown prince. A genius in literature and the arts, he was a writer and composer, and created several court dances. He used court ritual to validate and augment the king's control over the government. Yi Yeong first became active in politics at the age of 17, due to his father illness. He pursued various political reforms and his avoidance of nepotism created several enemies amongst his maternal relatives. The prince served as regent from 1827 until his death three years later.

• Father: King Sunjo (29 July 1790 – 13 December 1834) • Grandfather: King Jeongjo (28 October 1752 – 18 August 1800) • Biological grandmother: Concubine Su, of the Bannam Park clan (1 June 1770 – 6 February 1823) • Legal grandmother: Queen Hyoui, of the Cheongpung Kim clan (25 December 1753 – 29 March 1821) • Mother: Queen Sunwon, of the (new) Andong Kim clan (8 June 1789 – 21 September 1857) • Grandfather: Kim Jo-sun, Internal Prince Yeongan (7 October 1765 – 2 May 1832) • Grandmother: Internal Princess Consort Cheongyang, of the Cheongsong Shim clan (1766–1828) • Consort(s) and their respective issue • Queen Sinjeong, of the Pungyang Jo clan (9 January 1809 – 23 May 1890) • Yi Hwan, King Heonjong (8 September 1827 – 25 July 1849), first son • Yi Hui, Emperor Gojong (8 September 1852 – 21 January 1919), adopted son

• Portrayed by Park Bo-gum in the 2016 KBS2 TV series Love in the Moonlight. • Portrayed by Kim Min-jae in the 2018 film Fengshui.