Yi An-sa
Yi An-sa was a Goryeo nobleman who would become the great-great-grandfather of Yi Seonggye, founder of the Joseon Dynasty.
On 28 July 1392, when Taejo made a new dynasty, he was granted the royal title King Mok. After his death in 1274, he was buried in Deokneung, Neung-ri, Gapyeong-myeon, Sinhung-gun, South Hamgyong Province, North Korea and given the temple name Mokjo by his great-great-great-grandson, King Taejong on 22 April 1411 along with his posthumous name.
Family
- Father: Yi Yang-mu
- *Grandfather: Yi Rin
- *Grandmother: Lady Mun of the Nampyeong Mun clan ; third daughter of Mun Geuk-gyeom.
- Mother: Lady Yi of the Samcheok Yi clan
- *Grandfather: Yi Gang-je
- **Older brother: Yi An-in
- **Younger brother: Yi Yeong-pil
- **Younger brother: Yi Yeong-mil
- **Younger brother: Yi Yeong-seup
- Wife: Queen Hyogong of the Pyeonchang Yi clan
- *First son: Yi Eo-seong, Grand Prince Ancheon
- *Second son: Yi Jin, Grand Prince Anwon
- *Third son: Yi Jeong, Grand Prince Anpung
- *Fourth son: Yi Haeng-ni
- *Fifth son: Yi Mae-bul, Grand Prince Anchang
- *Sixth son: Yi Gu-su, Grand Prince Anheung