| Prince Hyoeun | |||||||||||||||||
| Succession: | Prince Dongyang 동양군 東陽君 | ||||||||||||||||
| Predecessor: | Title established | ||||||||||||||||
| Successor: | Wang Rim – son | ||||||||||||||||
| Prince of Goryeo | |||||||||||||||||
| Father: | Taejo of Goryeo | ||||||||||||||||
| Mother: | Lady Dongyangwon of the Pyeongsan Yu clan | ||||||||||||||||
| Issue: | |||||||||||||||||
| Birth Name: | Wang Wŏn (왕원) | ||||||||||||||||
| Birth Date: | ?? | ||||||||||||||||
| Birth Place: | Kaesong, Goryeo | ||||||||||||||||
| Death Date: | ?? | ||||||||||||||||
| Death Place: | Kaesong, Goryeo | ||||||||||||||||
| Regnal Name: |
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| House: | Wang | ||||||||||||||||
| Religion: | Buddhism | ||||||||||||||||
| Module: |
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Prince Hyoeun, personal name Wang Wŏn or Wang Suk, also known by his title Prince Dongyang and Grand Prince Dongyang was a prince of Goryeo.[3] He was the youngest son of Taejo of Goryeo and Lady Dongyangwon,[4] and the 15th son of Taejo overall. Through his descendant, Wang Mi (1365 – ?), ninety percent of the modern day Kaesong Wang clan trace their lineage to Prince Hyoeun.[5] He was the first grandson of Yu Tal who served as the Minister of Works .
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. Both of his sons, Wang Rim and Wang Chŏng whom at this time were too young, escaped from death and fled, hiding in a private house to survive.