| Grand Prince Wolsan 월산대군 | |
| Succession: | Prince of Joseon |
| Reign: | 1460–1470 |
| Successor: | Prince Jalsan |
| Succession1: | Grand Prince of Joseon |
| Reign1: | 1470–1488 |
| Successor1: | Grand Prince Jalsan |
| Issue: | Yi Yi, Prince Deokpung |
| Royal House: | Jeonju Yi |
| Father: | Deokjong of Joseon |
| Mother: | Queen Sohye |
| Birth Name: | Yi Jeong |
| Birth Date: | 18 December 1454 |
| Birth Place: | Grand Prince Suyang's manor, Hanseong-bu, Joseon |
| Death Date: | 21 December 1488 (aged 34) |
| Death Place: | Grand Prince Wolsan's manor, Hanseong-bu, Joseon |
| Burial Date: | After 1488 |
| Place Of Burial: | Grand Prince Wolsan's Mausoleum San 16–35, Sinwon-dong, Deokyang-gu, Goyang-si, Gyeonggi-do[1] |
| Religion: | Confucianism, later Buddhism |
| Hangul: | 월산대군 |
| Hanja: | 月山大君 |
| Rr: | Wolsan Daegun |
| Mr: | Wŏlsan Taegun |
| Hangulborn: | 이정 |
| Hanjaborn: | 李婷 |
| Rrborn: | I Jeong |
| Mrborn: | I Chŏng |
| Hangulja: | 자미 |
| Hanjaja: | 子美 |
| Rrja: | Jami |
| Mrja: | Chami |
| Hangulph: | 공간, then 효문 |
| Hanjaph: | 恭簡, then 孝文 |
| Rrph: | Gonggan, then Hyomun |
| Mrph: | Konggan, then Hyomun |
| Hangulho: | 풍월정 |
| Hanjaho: | 風月亭 |
| Rrho: | Pungwoljeong |
| Mrho: | P'ungwŏlchŏng |
Grand Prince Wolsan (; 18 December 1454 – 21 December 1488) was a Korean Royal Prince as the oldest son of Deokjong of Joseon and Queen Sohye. His personal name was Yi Jeong .
He become a Grand Prince in 1470. Even his father was honoured as King Uigyeong in 1470,[2] Great King Hoegan in 1475,[3] and given temple name Deokjong, the Prince didn't succeed his father as a Crown Prince. Later, he built a villa in his hometown in Bukchon and spent his life reading books and writing poetry there.[4]
The Prince was born on 18 December 1454 as the oldest son of Crown Prince Uigyeong and Crown Princess Han of the Cheongju Han clan, he was also the oldest grandson of King Sejo. When the Prince was young, he grew up under the love of his grandfather. In 1457, his father died suddenly, then he was raised in the court by his grandfather.
In 1460 (6th year reign of his grandfather), he was appointed as Prince Wolsan . When his uncle, Yejong of Joseon died suddenly at the young age, his little brother was appointed as the new King for succeeded him and then, he was appointed as Grand Prince Wolsan .
On 19 August 1466, when the Prince was 9 year old, he then married Lady Bak, the daughter of Bak Jung-seon from the Suncheon Bak clan and Lady Heo of the Yangcheon Heo clan. Lady Bak was one year older than the Prince.
After his death, Seongjong firstly gave him a posthumous name as Gong-gan then changed into Hyo-Mun . After his death, the Prince was buried in 427, Sinwon-ri, Wondang-myeon, Goyang-gun, Gyeonggi Province (now is Sinwon-dong, Deokyang-gu, Goyang-si, South Korea) alongside his wife, Grand Princess Consort Seungpyeong. His concubine, Lady Gim was also buried nearby from his. His tombstone was written by Im Sa-hong in 1498 (4th year reign of Yeonsangun of Joseon).
The Prince often wrote some poems such as:
And his other poems were also introduced to Ming dynasty and some of them were added to Jeonusanyeoljo Poetry Book in China.
Sibling(s):