Park Je sun

Pak Chesoon was a Korean politician and diplomat during the late Joseon dynasty. His pen name was Pyeongjae . n modern South Korea, he is regarded as one of the Five Eulsa Traitors who betrayed the country into Japanese domination in 1905.

Pak was born in Yongin, outside Seoul where his father was a minor government official and supporter of Kim Yunsik. His familys clan name is Bannam .

Source: Wikipedia