Ugŏ of Gojoseon

Ugŏ was the last king of Wiman Chosŏn, the last remnant of Gojoseon. He was a grandson of Wi Man.
Ugŏ was killed by an assassin sent by a faction advocating surrender. Even after the death of Ugŏ, Gojoseon resisted the Han forces until 108 BC but lost and the Four Commanderies of Han were then set up.

Family

Wi Man, grandfather and first king of Wiman Chosŏn
son and successor, name not recorded
Wi Jang, son

Rebellion against Ugŏ

Around the period from 128 BC to 126 BC, Canghai Commandery, covering an area in northern Korean peninsula to southern Manchuria, existed. Nan Lü, who was a monarch of Dongye and a subject of Wiman Chosŏn, revolted against Ugŏ of Gojoseon and then surrendered to the Han dynasty with 280,000 people. The Canghai Commandery was established following this revolution, however in 2 years, it was abolished by Gongsun Hong.