Danjong (Korean: 단종; Hanja: 端宗; 9 August 1441 – 16 November 1457), personal name Yi Hong-wi, was the sixth monarch of Joseon. He ascended to the throne at the age of 11, upon the death of his sickly father, King Munjong. Three years later, he was forced to abdicate by his uncle, Grand Prince Suyang (later King Sejo), and was subsequently put to death after having been demoted to princely rank and exiled. His story is well-known in modern South Korea, where it has been compared to a Shakespearean tragedy.
The future Danjong was born during the reign of his grandfather, King Sejong. His mother, Crown Princess Gwon (posthumously honored as Queen Hyeondeok), didn't recover after giving birth and died the next day. He had one elder sister, Princess Gyeonghye, and one elder half-sister, Princess Gyeongsuk.
In 1452, Yi Hong-wi succeeded his father, King Munjong. Since he was too young to rule, the governing of the country fell to Chief State Councilor Hwangbo In, and Left State Councilor General Kim Chongsŏ, along with Princess Gyeonghye acting as his guardian.
In 1453, this government was overthrown in a coup d'état led by his uncle, Grand Prince Suyang (posthumously called King Sejo), who persuaded a number of scholars and officials who had served in the court of Sejong the Great to support his claim to the throne. Hwangbo In and Kim Chongsŏ were killed in front of the gate of Gyeongbokgung.
In late January 1454, the 14-year-old king married the 15-year-old daughter of Song Hyeon-su, Lady Song the Yeosan Song clan (later known as Queen Jeongsun). In 1455, he was forced to abdicate and became the king emeritus while his wife became Queen Dowager Uideok.
The following year, six court officials attempted to restore him to power, but their plot was discovered and they were immediately executed. Yi Hong-wi was later demoted to Prince Nosan (Nosan Gun; 노산군, 魯山君) and exiled to Cheongnyeongpo, Yeongwol. His wife was also sent out of the palace after losing her status as queen dowager and being demoted to Princess Consort Nosan (Nosan Gunbuin; 노산군부인).
Initially, Sejo was hesitant to execute Danjong and showed mercy despite the attempted coup. However, beginning to perceive that Danjong would present a continuing threat to his rule, Sejo accepted the advice of the court and ordered that his nephew be disposed of. In November 1457, he was put to death.
Historical records conflict on the circumstances of Danjong's death. In the Veritable Records of the Joseon Dynasty, Danjong is recorded as voluntarily hanging himself after the execution of his sympathizers. In this version, Danjong is buried with proper funeral rites, and Sejo is not directly responsible for his death.
However, during the reign of King Seonjo, a senior official recounted that Danjong was poisoned by a royal inspector, on orders from Sejo. During the reign of King Sukjong, another account of Danjong's death entered the official record. In this version, a royal inspector named Wang Bang-yeo is ordered to execute Danjong. However, Wang hesitates to do so, and one of Danjong's scholars volunteers to do so instead. The scholar immediately bleeds, resulting in his death, implying the execution was not sanctioned by Heaven.
The Yeollyeosil Gisul, written by 18th-century scholar Yi Geung-ik, elaborates on the previous account. Yi writes that a court attendant "fastened a long cord to a bowstring and pulled it tight through a window behind the seated king", implying Danjong was executed by strangulation.
It is said Sejo ordered his body to be dumped in a river where it flowed to Yeongwol and decreed that anyone giving him a proper burial would face execution. Eom Heung-do, hojang of Yeongwol, held a funeral for him and secretly buried the body in his family grave, which later became Jangneung. To escape retribution, he went into hiding for the remainder of his life. Honored by Koreans as a "loyal subject to the rightful king", his act continues to be commemorated annually in the village, where locals reenact the king's funeral. The town also features a statue of him holding Danjong's body.
There was an attempt to honor the late king and queen during Jungjong's reign, but he rejected the proposal. During the reign of King Sukjong scholars once again proposed the restoration of the titles. After 200 years, in 1698, the demoted Prince Nosan and his wife were finally restored, receiving the temple name "Danjong", and posthumous name "Queen Jeongsun".
In modern South Korea, Danjong's life and death are well-known, with film critic Kim Do-hoo stating, "The story of Danjong is old, but it is never outdated." Kim compared Danjong's life to a Shakespearean tragedy, noting that it has "moved generations".
The 2026 film The King's Warden, which centered around the exile of Danjong, became South Korea's highest grossing film and led to a renewed interest in Danjong. Visits to Cheongnyeongpo, the site of exile, increased fivefold compared to 2025. Sales of books related to Danjong similarly increased approximately 80 times compared to the same period in 2025.
In Korean shamanism, Danjong is worshiped as one of Wangshin (Korean: 왕신; Hanja: 王神; lit. 'King god').
Father: King Munjong (문종대왕; 15 November 1414 – 10 June 1452)
Grandfather: King Sejong (세종대왕; 15 May 1397 – 8 April 1450)
Grandmother: Queen Soheon (소헌왕후), of the Cheongsong Shim clan (청송 심씨; 20 October 1395 – 28 April 1446)