Wiman of Gojoseon

Wi Man or Wei Man was the founder and first monarch of the Wiman Chosŏn dynasty of Korea. He was originally a military leader of the Chinese Kingdom of Yan. When king Lu Wan of Yan was defeated by the Han in 195 BCE, Wi Man fled to Old Chosŏn in north-western Korea and later usurped power from its king in 194 BCE, establishing Wiman Chosŏn. Recorded in the Records of the Grand Historian and the Book of Han, Wiman was the first ruler in the history of Korea to have been recorded in documents from the same time period.