Grand Prince Yeongchang

He become Grand Prince Yeongchang (영창대군, 永昌大君) when he was 6 years old.[9] His father, Seonjo was aware with the fact that Gwanghae had already become the Crown Prince (왕세자, 王世子), then secretly discussed with Yu Yeong-Gyeong (유영경) and some of his servants about censure of the Prince. Seonjo also made plans to change the crown prince when he was born, but it was destroyed. Meanwhile, Seonjo with specifically asked 7 people, including Han Jun-Gyeom (한준겸) to follow the Prince in order to protect him.[7] This was called Yugyochilsin (유교칠신, 遺敎七臣; lit.:"Confucian Chilsin"). Later, when Yi Yi-Cheom (이이첨) and Jeong In-Hong (정인홍) saw this, both of them argued that he shouldn't change the crown prince, but in fact, they went home and spreading unfounded rumors. When Seonjo suddenly died on 16 March 1608, Gwanghae, the Crown Prince took over the throne and then recruited them again.[5]

Later, in 1613, Gyechukoksa (계축옥사) was made and Daebukpa (대북파) made a false confession to Bak Eung-Seo (박응서) and others of the conspiracy to elect the Prince and Kim Je-Nam (김제남), his maternal grandfather. The Prince was then abolished and exiled to Ganghwa-do. From July to November in the same year, Yang-sa (양사), Hongmungwan (홍문관, 弘文館)[10] and Seungjeongwon (승정원, 承政院)[11] alternately impeached them, but Gwanghae rejected they all.

In 1614, Yi Yi-Cheom's group ordered Ganghwabusa (강화부사, 江華府使) to Jeong-hang (정항, 鄭沆)[12] and maliciously burned the Prince's room, also make him quit food.[6] The young prince couldn't sit or lie on a hot floor day and night, grabbed a grate and cried.[13] After this, Yi Yi-Cheom and Jeong-hang reported if the Prince died because of illness.[14] At this time, he was still 7 years old.

At this time, Samsa (삼사) and Seungjeongwon (승정원) continued to appeal the punishment of Yeongchang.[15]

But, some of Nam-in (남인, 南人), Il-bu (일부) and Seo-in (서인, 西人) opposed his punishment, also Sa-rim (사림) opposed his execution and claimed that although he and Gwanghae were a half brother because their mother was different, there was a righteousness between mother, child, and brothers. In addition, public opinion appeared in favor to him and asked if he would have intention to conspiring against him. However, due to the continued appeals from Daebukpa (대북파), the Prince died in his exile place on 19 March 1614.

After his death, his half big brother, Prince Gyeongchang (경창군)'s 4th son, Prince Changseong (창성군) become his adopted son for continuing the House of Yi Royal Family's line. Then, on 15 March 1623, due to his nephew, King Injo's new reign, he was restored and his title was given back to him.

The Prince's body was transported and buried in 1614 (6th year reign of his half big brother, Gwanghaegun of Joseon) under Namhansanseong in Gwangju-gun, Gyeonggi-do, South Korean and his tomb was located in Goeun-ri, Iljuk-myeon, Anseong-si, Gyeonggi-do firstly, but later relocated in 1993 to Alleyway 4911, Taepyeong 3–dong, Seongnam-si.[2] That tomb was also found damaged in five pieces during the plumbing of a city gas facility.[5]

His tomb, "Grand Prince Yeongchang's Mausoleum" (영창대군묘) was designated as the 75th Monument of Gyeonggi-do on 19 September 1983.[16][2]