King Yangheon (Korean: 조선공; Hanja: 朝鮮公; died 1099[a]), born Wang Do, was a Goryeo royal prince as the first and oldest son of King Munjong and Consort Ingyeong who would become the grandfather of the future Queen Janggyeong, Queen Uijeong, and Queen Seonjeong.
[1] Although the year when he was born is unknown, but based on "Epitaph of Yi Ja-yeon" (이자연 묘지명; 李子淵 墓誌銘), at the death of Yi in 1061, only three names that recorded as his royal grandsons: the crown prince, Marquess Gukwon, and Wang Do.
He was later honoured as Duke Joseon (조선공; 朝鮮公) in 1077 (31st years reign of his father)[3] and appointed as Sutaebo (수태보; 守太保) in 1086.
[6] Wang Do was married with the second daughter of one of his maternal uncle, Yi Jeong (이정)[7] and they had three sons together.
According to the "Epitaph of Wang Won" (왕원 묘지명; 王源 墓誌銘), the late Duke Joseon was later honoured as King Yangheon of Joseon State (조선국 양헌왕; 朝鮮國 禳憲王) and following this, his wife, Lady Yi was honoured as "Queen Consort Yangheon" (양헌왕비; 禳憲王妃).