Yi Ch'un
Yi Ch'un or known for his Mongolian name Bayan Temür was the grandfather of Yi Sŏng-gye, founder of the Joseon Dynasty.
From Yuan dynasty, he replaced his father, Yi Haeng-ni as a chiliarch. He later married Lady Pak of the Munju Pak clan 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. 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. He was buried in Uireung, Hamheung-si, Hamgyeongnam-do and his wife was buried in Sulleung, Heungnam-si, Hamgyeongnam-do.
Family
- Father: Yi Haeng-ni, Ikjo of Joseon
- *Grandfather: Yi An-sa, Mokjo of Joseon
- *Grandmother: Queen Hyogong of the Pyeonchang Yi clan
- Mother: Queen Jeongsuk of the Deungju Ch'oe clan
- *Grandfather: Ch'oe Ki-yŏl, Prince Anbyeon
- Wives and their Children:
- Queen Gyeongsun of the Munju Pak clan
- #Princess Munhye – married Mun In-yŏng, first daughter
- #Princess Munsuk – married Kim Ma-bun, second daughter
- #Yi Cha-hŭng, Grand Prince Wanchang, first son
- #Yi Pyŏng, Grand Prince Wancheon, second son
- #Yi Cha-ch'un, Hwanjo of Joseon, third son
- #Yi Cha-sŏn, Grand Prince Wanwon, fourth son
- #Yi Chong, Grand Prince Wanseong, fifth son
- Lady Jo of the Hanyang Cho clan ; daughter of Cho Yang-gi.
- #Yi Wanja, Prince Bulhwa, sixth son
- #Yi Nan-hae, seventh son
- #Princess Munsuk — married Kim, third daughter
- #Princess Munui – married Hŏ Chung, ''fourth daughter''