King Minjung was the fourth ruler of Goguryeo, the northernmost of the Three Kingdoms of Korea. According to The History of the Three Kingdoms, he was the younger brother of the country’s third ruler, King Daemusin, and the fifth son of the second ruler, King Yuri.

During Minjung's five years of reign, he avoided military conflict and maintained peace throughout most of the kingdom. A massive pardon of prisoners occurred in his first year of reign. Several natural disasters marked his reign, including a flood during his second year of reign that occurred in the eastern provinces causing several citizens to lose their homes and starve. Seeing this, Minjung opened up the food storage and distributed food to the people.