Munjong (Korean: 문종; Hanja: 文宗; 15 November 1414 – 10 June 1452), personal name Yi Hyang (이향; 李珦), was the fifth monarch of the Joseon dynasty of Korea.
In January 1421, Sejong instructed that his eight-year-old son be educated by scholars from the Hall of Worthies, then in October the same year, he was invested as crown prince and sent to study at the Sungkyunkwan.
[1] From 1442 until his own ascension to the throne in 1450, Yi Hyang served as regent and took care of state affairs during the final years of his father's reign, as Sejong developed various illnesses and disorders.
[3] Yi Hyang ascended to the throne as King Munjong in 1450, and his reign marked the beginning of an imbalance of power at the Joseon court.
Originally a concubine, she gave birth to two daughters, one of whom was Princess Gyeonghye, and to Yi Hong-wi, Mujong's only surviving son, who later became King Danjong.