Yi Cha-hŭng

Yi Cha-hŭng (born 1305), posthumously known as Grand Prince Wanchang was a late Goryeo periods second rank official who became part of the early Joseon royal family member as the first and oldest son of Yi Ch'un, making him uncle to Yi Seonggye, its founder.

He studied in Yeokdong as one of U Tak 's student. In Yuan dynasty, Yi served as one of the government official in there. After his nephew, Yi Seong-gye established the new dynasty, Yi Cha-hŭng served his nephew as Taejo's military officer  and on 9 March 1871, Yi was given Posthumous name Jeonggan. In 1872, Emperor Gojong of Korea gave him a posthumous name as Grand Prince Wanchang and was enshrined in Yeongjongjeonggyeong  alongside his parents. Their tomb located at Gwiju-dong, Hamheung.