Onjo Of Baekje
Onjo (?-28, r. 18 BC–AD 28) was the founding monarch of Baekje, one of the Three Kingdoms of Korea. According to the Samguk Sagi, he was the ancestor of all Baekje kings.
Read more about Onjo Of Baekje: Background, Founding and Expansion of Baekje, Death and Succession