Yi Dang (hangul:?? hanja:??, February 1, 1783 – May 8, 1826) was a noble family of Korean Joseon dynasty.
But he was non peerage title, his father Prince Euneon and older brother Crown Prince Sangkye was treason charges and his mother Lady Song of Sangsan and sister-in-law Lady Sin of Sangkye is believe in Catholicism, reason is Neo-Confucianism was the state religion in Joseon dynastys.
a half-brother and step-cousin of Hanor Grand Prince Jeongye, father of 25th king Cheoljong of Joseons.