Gongmin of Goryeo
King Gongmin ruled Goryeo Dynasty Korea from 1351 1374. He was the second son of King Chungsuk. In addition to his various Korean names, he bore the Mongolian name Bayan Temr .
Although the relationship between Queen Noguk and the king was very close, they failed to conceive an heir for many years. Despite suggestions of taking a second wife, King Gongmin ignored these requests. The king was also known to have entered into pederastic relationships with several court catamites, or chajewi, and the names of five of these are recorded as Hong Yun, Han An, Kwon Chin, Hong Kwan, and No Son. Queen Noguk became pregnant but died from complications with childbirth in 1365. Her death led to Gongmins depression and mental instability. King Gongmin became indifferent to politics and entrusted the great tasks of state to Pyeonjo, a Buddhist monk who was born as the son of a princess and a slave. Judging him as clever, Gongmin renamed Pyeonjo as Shin Don. Having the full confidence of King Gongmin, Shin Don tried to reform the society of Goryeo. In 1365, Gongmin gave Pyeonjo the nickname Cheonghan Geosa, and the noble title of Jinpyeonghu . After six years, Shin Don lost
Source: Wikipedia