Yi Chach'un

Yi Chach'un
이자춘
李子春
King of Joseon (posthumously)
Darugachi
Reign1343–1356
Born20 January 1315
Aldong, Ssangseong Prefecture, Yuan dynasty
Died3 June 1361 (aged 46)
Gwiju-dong, Hamheung-bu, Dongbuk-myeon, Goryeo
Burial
Jeongneung tomb
Hamju County, South Hamgyeong Province, North Korea
SpouseLady Yi
Queen Uihye
Issue5 sons and 1 daughter
Posthumous name
  • First: King Hwan (환왕, 桓王; given in 1392 by King Taejo)
  • Last: King Yeonmu Seonghwan the Great (연무성환대왕, 淵武聖桓大王; given in 1411 by King Taejong)
Temple name
Hwanjo (환조; 桓祖)
HouseJeonju Yi
FatherYi Ch'un
MotherLady Bak of the Munju Bak clan

Yi Chach'un (Korean이자춘; Hanja李子春; 20 January 1315 – 3 June 1361), also known as Hwanjo, was a minor military officer of the Yuan Empire who later transferred his allegiance to Goryeo and became the father of Yi Sŏnggye, founder of the Joseon Dynasty. Yi's Mongolian name was Wulusibuhua (Korean울루스부카; Hanja吾魯思不花).