| Yi Wongye | |||||||||||||||||||||||||||
| Grand Prince of Joseon (posthumously) | |||||||||||||||||||||||||||
| Spouse: | Lady Gim Lady Gim Lady Mun | ||||||||||||||||||||||||||
| Issue: | 4 sons and 4 daughters | ||||||||||||||||||||||||||
| Royal House: | House of Yi | ||||||||||||||||||||||||||
| Father: | Yi Jachun | ||||||||||||||||||||||||||
| Mother: | Lady, of the Hansan Yi clan | ||||||||||||||||||||||||||
| Birth Name: | Yi Won-gye | ||||||||||||||||||||||||||
| Birth Date: | 1330 | ||||||||||||||||||||||||||
| Birth Place: | Goryeo? | ||||||||||||||||||||||||||
| Death Date: | 23 October 1388 (aged 58/9) | ||||||||||||||||||||||||||
| Death Place: | Hwaju, Hamgyeong-do, Goryeo | ||||||||||||||||||||||||||
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Yi Won-gye (1330–1388) or formally called Grand Prince Wanpung, was a warrior and painter in the late Goryeo periods who became part of the early Joseon dynasty royal family member as the oldest child and son of Yi Jachun, making him half brother to Yi Seonggye, its founder.
After repulsed the Hong Geon-jeok rebellion and Japanese rebellion in the late Goryeo dynasty era, Yi was appointed as the Prince Cheoksan and later Prince Wansan . He was recorded to died a few days after leaving a desperate poem and knowing that his brother wanted to destroy Goryeo and made a new dynasty by poisoned himself and committed suicide in 1388. Then, after the Joseon dynasty was established in 1392, he was given title as Count Wansan and formally became a "daegun" in 1872 during King Gojong's reign.
Born in 1330 (17th years reign of King Chungsuk of Goryeo) at Heukseok village, Hwaryeong Mansion in Ssangseonggwanbu (now Yeongheung-bu, Hamgyeong-do) in the Yuan dynasty as the oldest child and son of Yi Jachun, from his first wife who came from the Hansan Yi clan. His ancestors lived in Jeonju for generations and moved to Ssangseong Prefectures in the Yuan dynasty.
However, he lost his mother only at the age of 4 and he was raised by his father's second wife, Lady Choe who was Yi Seonggye's biological mother. According to the Veritable Records of the Joseon Dynasty, Yi Won-gye and his brothers always lived together in the same place since their childhood, that caused their bond to be very strong. He mastered the scriptures of Confucianism, wrote poetry well, and was also good at horseback riding and archery.
In 1359 (8th years reign of King Gongmin), a man named Hong Geon-jeok led an invansion in Yalu River but immediately left if after being repelled by him. He also contributed for defeating Hong in Bakju and restored Gaegyeong during the second rebellion alongside Jo Cheon-ju and others under general An Woo 's command. Then, he received many honors and formally become Prince Cheoksan from the king in 1363. Three years later, he contributed on the Ssangseong Prefecture restoration and Wokou accident along with Yi Seonggye and Yi Jachun. Later in 1375, he once again made contribution for the country.
He spent his old days in Wihwa-do and honoured as Prince Wansan while two years later after his death in 1388, he received his final title and honors for making big contribution during his lifetime. His title was later upgraded into Count Wansan and received Yangpyeong as his Posthumous name during the reign of King Taejo
He was buried on the right side of Jeongneung tomb, which was also his father's tomb and was enshrined at Samui Temple, Bukcheong in 1901 while later moved to Seonwon Temple, Yiwon, Hamgyeongnam-do in 1909 alongside his last poem. However, after the 1950 war in Korean, his descendants held his ancestral rites every year on the first Sunday of the 10th months in the Korean calendar (lunar) at Heunggyeongdan, a branch of Cheonhyang in Neunggok-ma, Daesim-ri, Yangseo-myeon, Yangpyeong-gun, Gyeonggi Province since 1984.