Yi Seong-deuk (Korean: 이성득; Hanja: 李成得; 1775 – 27 November 1817) was a royal family member of the Later Joseon dynasty periods and a national offender. He was the son of Prince Euneon with a concubine. Prince Euneon was the son of Crown Prince Sado and the grandson of Yeongjo of Joseon. Yi Seong-deuk was the half-brother of Prince Sanggye, Prince Punggye and Prince Jeongye, who become the biological father of Cheoljong of Joseon. However, in 1817, he was tortured, causing death. The reason was unknown, as his family's records were destroyed by the Joseon government.
Born |
1775
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Died |
27 November 1817 (aged 42)
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