Kimjun

Japanese: 箕準 - きじゅん

...The northwestern part of the Korean peninsula has had exchanges with China since ancient times, and seems to have been deeply influenced by China in all aspects of politics, economy, and culture. According to the Records of the Grand Historian, in 195 BC (the 12th year of the reign of Emperor Gaozu of Han), when Yan King Lu Wan rebelled against the Han, his general Wei Man led over 1,000 of his subordinates across the Baisui River (there are various theories about its location) and headed for North Korea. He was trusted by Jin Jun (also written as Huai), the last king of the Korean state, and was given an official position and a fief. As he gained power, Wei Man gathered the exiled people of Yan and Qi to threaten Jun, and during the reign of Emperor Hui of Han, he expelled Jun and became king himself, making the former king's former capital Wangxiancheng (now near Pyongyang) his capital.

From [Kija Joseon]

...In the Goryeo and Yi dynasties, especially in the latter, Confucianism was the state religion, so the idea of veneration of King Jija became strong. The last king of the King Jija Joseon dynasty was called Kim Jun. He called himself the Marquis of Korea, but he was exiled by the Yan man Wiman, the founder of the Wiman Joseon dynasty, around the beginning of the 2nd century B.C....

*Some of the terminology explanations that mention "Minjun" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…朝鮮半島北西部は古来から中国との交流がおこなわれ，政治，経済，文化の諸般に深い影響を受けていたようである。《史記》によると前195年(漢の高祖12)，燕王盧綰（ろわん）が漢に背反したとき，その部将の衛満は部下1000余人をひきいて浿水（ばいすい）(位置に諸説あり)を渡り北朝鮮の地におもむき，箕子（きし）朝鮮国最後の国王，箕準(淮とも記す)に信頼され官職を授けられ封地も賜ったという。やがて勢力をたくわえた衛満は燕や斉の亡民を糾合して準を脅かし，漢の恵帝のころ準を追放してみずから王となり前王の故都王険城(現，平壌付近)を首都とした。…