), ninety percent of the modern day Kaesong Wang clan trace their lineage to Prince Hyoeun.
[5][page needed] He was the first grandson of Yu Tal (유달) who served as the Minister of Works (공부상서).
[3] He later was executed by his older half-brother, Wang So due to his ferocious personality and he also secretly had different thoughts with people of insignificance.
Wang So also said that Hyoeun had a violent temperament and the intention of plotting a rebellion.
[citation needed] Both of his sons, Wang Rim (왕림) and Wang Chŏng (왕정) whom at this time were too young, escaped from death and fled, hiding in a private house to survive.