| Yi Ch'un 이춘 李椿 | |
| King of Joseon (posthumously) | |
| Birth Name: | Yi Ch'un (이춘) |
| Birth Date: | 1265 |
| Birth Place: | Goryeo |
| Death Date: | 24 July 1342 (aged 76–77) |
| Death Place: | Goryeo |
| Burial Place: | Uireung tomb |
| Spouse: | Queen Gyeongsun Lady Jo (m.1322) |
| Issue: | 5 sons and 3 daughters |
| Full Name: |
Yi Sŏn-rae (이선래, 李善來) Bayan Temür (바얀테무르, 孛顔帖木兒) |
| Posthumous Name: |
|
| Temple Name: | Dojo (도조, 度祖; sometimes spelled Takjo (탁조) due to other Hanja readings) |
| Royal House: | Yi |
| Father: | Yi Haeng-ni |
| Mother: | Lady, of the Yeongheung Choe clan |
Yi Ch'un (1265 – August 25, 1342) or known for his Mongolian name Bayan Temür (Mongolian script: Баян төмөр; Pai-yen tö-mör) was the grandfather of Yi Sŏng-gye, founder of the Joseon Dynasty.[1]
From Yuan dynasty, he replaced his father, Yi Haeng-ni as a chiliarch.[2] He later married Lady Pak of the Munju Pak clan (문주 박씨; the future Queen Gyeongsun) and had 2 sons, they were: Yi Cha-hŭng and Yi Cha-ch'un, the biological father of Yi Sŏng-gye. After Pak's death, Yi remarried again with Lady Cho, the daughter of Cho Yang-gi .[3] In 5 August 1392, his grandson, Yi Sŏng-gye founded the Joseon Dynasty and he posthumously honoured his grandfather as King Gonguiseongdo the Great and gave him the temple name Dojo .[4] He was buried in Uireung, Hamheung-si, Hamgyeongnam-do and his wife was buried in Sulleung, Heungnam-si, Hamgyeongnam-do.