Yi Ch'un

Names
	Childhood name: Yi Sŏn-rae (이선래; 李善來); Mongolian name: Bayan Temür (바얀테무르; 孛顔帖木兒);
Posthumous name
	First: King Do (도왕, 度王; given in 1392 by King Taejo); Last: King Gongui Seongdo the Great (공의성도대왕, 恭毅聖度大王; given in 1411 by King Taejong);
Temple name
	Dojo (도조; 度祖; sometimes spelled Takjo (탁조) due to other Hanja readings)

Yi Ch'un
이춘
李椿
Yi Ch'un; 이춘; 李椿
King of Joseon (posthumously)
Born	Yi Ch'un (이춘); 1265; Goryeo
Died	24 July 1342 (aged 76–77); Goryeo
Burial	Uireung tomb
Spouse	Queen Gyeongsun; Lady Jo (m.1322)
Issue	5 sons and 3 daughters
Names
Names
	Childhood name: Yi Sŏn-rae (이선래; 李善來); Mongolian name: Bayan Temür (바얀테무르; 孛顔帖木兒);
Posthumous name
	First: King Do (도왕, 度王; given in 1392 by King Taejo); Last: King Gongui Seongdo the Great (공의성도대왕, 恭毅聖度大王; given in 1411 by King Taejong);
Temple name
	Dojo (도조; 度祖; sometimes spelled Takjo (탁조) due to other Hanja readings)
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.

From Yuan dynasty, he replaced his father, Yi Haeng-ni (이행리) as a chiliarch. 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 (조씨), the daughter of Cho Yang-gi (조양기). In 5 August 1392, his grandson, Yi Sŏng-gye founded the Joseon Dynasty and he posthumously honoured his grandfather as King Gonguiseongdo the Great (공의성도대왕; 恭毅聖度大王) and gave him the temple name Dojo (도조; 度祖). He was buried in Uireung, Hamheung-si, Hamgyeongnam-do and his wife was buried in Sulleung, Heungnam-si, Hamgyeongnam-do.