Crown Prince Uigyeong

Crown Prince Ŭigyŏng (; 12 October 1438 – 29 September 1457), personal name Yi Chang, also known by his temple name King Deokjong, was the eldest son of King Sejo, the seventh monarch of Joseon, and the biological father of King Seongjong.

Biography Yi Chang was born during the reign of his grandfather, Sejong the Great, as the eldest child of the future King Sejo and his wife, Queen Jeonghui. He was enfeoffed as Prince Dowon (도원군) in 1445 and held the title until his father's accession to the throne. In 1450, he married Lady Han (posthumously Queen Sohye, better known as Queen Insu), the daughter of Han Hwak.

Yi Chang and Lady Han's first child, Grand Prince Wolsan, was born on 14 January 1455; their daughter, Princess Myeongsuk, in 1456; and their last child, the future King Seongjong, on 28 August 1457.

A month later, on 29 September 1457, Yi Chang died of unknown causes.

After his death, Lady Han and his children were allowed to continue living within the palace, but the former crown princess did not want to impose her stay and moved to a private residence.

Yi Chang's younger brother, Grand Prince Haeyang, became the new crown prince and acceded to the throne in 1468 (posthumously King Yejong). When he suddenly passed away 15 months later, Yejong was succeeded by Yi Chang's younger son. That same year, Yi Chang was posthumously elevated to the status of king, and in 1475, he was raised to great king and received a temple name.

Yi Chang was buried within Gyeongneung (경릉), today part of the Seooreung Cluster, in Goyang, Gyeonggi Province. Because the tomb was built according to the specifications for a crown prince, it is much simpler than that of his wife, who was later buried alongside him as grand queen dowager.

Family Father: King Sejo (; 11 November 1417 – 2 October 1468) Grandfather: King Sejong (; 15 May 1397 – 8 April 1450) Grandmother: Queen Sohŏn , of the Cheongsong Shim clan (; 20 October 1395 – 28 April 1446) Mother: Queen Jeonghui , of the Papyeong Yun clan (; 25 December 1418 – 15 May 1483) Grandfather: Yun Beon , Internal Prince Papyeong (; 1384–1448) Grandmother: Internal Princess Consort Heungnyeong , of the Incheon Yi clan (; 1383–1456) Consort(s) and their respective issue Queen Sohye , of the Cheongju Han clan (; 16 October 1437 – 21 May 1504) Yi Jeong , Grand Prince Wolsan (; 14 January 1455 – 31 January 1489), first son Princess Myeongsuk (; 1456 – 23 November 1482), personal name Gyeong-geun , first daughter Yi Hyeol , King Seongjong (; 28 August 1457 – 29 January 1495), second son Gwiin , of the Andong Gwon clan (? – 8 June 1494) Gwiin , of the Papyeong Yun clan Sugui , of the Geochang Shin clan (? – 16 June 1476)

Ancestry

In popular culture Portrayed by Baek Sung-hyun in the 2011 JTBC TV series Insu, the Queen Mother. Portrayed by Kwon Hyun-sang in the 2011 KBS2 TV series The Princess' Man.