King Munjong (1414–1452) was the fifth King of the Joseon Dynasty, who ruled Korea from 1450 to 1452. He was the eldest son of King Sejong and succeeded him in 1450, but died of disease two years later. He was succeeded by his son, Danjong of Joseon.
Most of Munjong's achievements were performed during his princely life. Although credited is primarily given to Jang Yeong-sil for inventing the water gauge, the Annals of the Joseon Dynasty state that it was the Crown Prince who found measures of water levels in the ground. He improved Hwacha as well-known type for nowadays, by himself and yonger brother Pe. ImYung(Yi Gu, 임영대군 이구). Also, it was Munjong who took care of state affairs late during King Sejong's reign, as Sejong developed various illnesses and disorders.
Munjong was the longest holder of the position of Crown Prince during the Joseon Dynasty, holding the position from 1421 to 1450, a record 29 years. From 1442 until his own accession to the throne in 1450, he served as regent to King Sejong.
Moon Suk-ui of the Nampyeong Mun clan (숙의 문씨, 1426 – September 26, 1508) - No issue.
Kwon So-yong (소용 권씨)
Jeong So-yong (소용 정씨)
An unnamed son (died in childhood)
Yoon So-hun (소훈 윤씨)
Yoo Seung-hwi (승휘 유씨)
Court Lady Jang (상궁 장씨)
An unnamed son (died in childhood)
King Sejong is considered as the best king in Korean history, however he didn't have good daughter-in-laws. He especially took care of Royal Noble Consort Sun of the Ha-eum Bong clan (순빈 봉씨) after experiencing a loss of the first daughter-in-law. Firstly, Royal Noble Consort Hwi of the Andong Kim clan wanted to gain love from Munjong. She burned shoes of Munjong's love and made her drink the ashes with alcohol. Later, King Sejong found out and she was kicked out of her position which was the second highest position where woman could go during Joseon Dynasty. After Royal Noble Consort Hwi of the Andong Kim clan lost her position, Royal Noble Consort Sun of the Ha-eum Bong clan (순빈 봉씨) became crowned prince's second wife. However, she was so lonely that she loved one of the made named So-ssang (소쌍). Also she relied on alcohol too much and at that time period, woman drinking too much alcohol was unacceptable. She lost her position because the king found out that she was a lesbian. Lastly, Queen of the Andong Kwon clan became the third wife of Munjong. She was the only wife that Munjong loved and she gave birth to Princess Gyeonghye and Danjong. Danjong was the next king of Joseon after Munjong died. She wasn't a troublemaker but she died right after she gave birth to her son. (http://navercast.naver.com/contents.nhn?rid=77&contents_id=57444)
^Daughter of Kim O-mun (김오문), Lord Anjeong (안정공), Magistrate Pandon-ryeong (판돈령부사); and Lady Yi (이씨 부인). Granddaughter of Kim Gu-deok (김구덕). Niece of Royal Noble Consort Myeong (명빈 김씨), thru her relationship as Kim Oh-mun's elder sister
^First Princess Consort to the Royal Prince Successor, married in 1427. Formally separated in August 18, 1429, then later committed suicide
^Daughter of Bong Yeo (봉여), who killed her himself
^Second Princess Consort to the Royal Prince Successor, married in October 15, 1429. Formally separated in October 26, 1436 (instigated by Sejong himself), due to a series of scandals, involving her lie of her pregnancy, and her being caught in a lesbian act (sleeping with one of her palace maids) by Sejong himself, in 1435
^One of Munjong's former concubines; Seung-hwi rank. Became Lady Hyeondeok, the Princess Consort to the Royal Prince Successor (현덕빈) upon her marriage
^Was demoted in June 26, 1457, as Lady Hyeondeok, following her son's deposition and demotion as Deposed Prince Nosan (노산군) in June 21, 1457. Was posthumously restored back in March 12, 1513, and finally in July 15, 1699
^Daughter of Kwon Jeon (권전), Internal Prince Hwasan (화산부원군); and Lady Haeju, Princess Consort to the Internal Prince, of the Choi clan (해주부부인 최씨)
^Firstly ranked as "Royal Prince Successor Descendant" (왕세손), when Munjong was still "Royal Prince Successor" (왕세자) during Sejong's reign. Became the Royal Crown Prince when his father became King