Yi An-sa

Posthumous name
	First: King Mok (목왕, 穆王; given in 1392 by King Taejo); Last: King Inmun Seongmok the Great (인문성목대왕, 仁文聖穆大王; given in 1411 by King Taejong);
Temple name
	Mokjo (목조, 穆祖)

Yi Ansa
이안사
李安社
Yi Ansa; 이안사; 李安社
King of Joseon (posthumously)
Darugachi
Reign	1252–1274
Born	Yi Ansa (이안사); around 1180–1200; Goryeo
Died	1274; Goryeo
Burial	Deokneung tomb
Spouse	Queen Hyogong
Issue	6 sons
Posthumous name
Posthumous name
	First: King Mok (목왕, 穆王; given in 1392 by King Taejo); Last: King Inmun Seongmok the Great (인문성목대왕, 仁文聖穆大王; given in 1411 by King Taejong);
Temple name
	Mokjo (목조, 穆祖)
House	House of Yi
Father	Yi Yang-mu
Mother	Lady, of the Samcheok Yi clan

Yi An-sa (died 1274) was a Goryeo nobleman who would become the great-great-grandfather of Yi Seonggye, founder of the Joseon Dynasty.^{[citation needed]}

On 28 July 1392, when Taejo made a new dynasty, he was granted the royal title King Mok (목왕; 穆王).^[1] 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 (목조; 穆祖) by his great-great-great-grandson, King Taejong on 22 April 1411 along with his posthumous name.^[2]

Family[edit]

Father: Yi Yang-mu (이양무, d. 1231)
- Grandfather: Yi-Rin (이린)
- Grandmother: Lady, of the Nampyeong Mun clan (부인 남평문씨); oldest daughter of Mun Geuk-gyeom (문극겸).
Mother: Lady, of the Samcheok Yi clan (부인 삼척이씨)
- Grandfather: Yi Gang-je (이강제)
  - Younger brother: Yi Yeong-pil (이영필)
  - Younger brother: Yi Yeong-mil (이영밀)
  - Younger brother: Yi Yeong-seup (이영습)
Wife: Queen Hyogong of the Pyeonchang Yi clan (효공왕후 이씨)
- 1st son: Yi Eo-seon, Grand Prince Ancheon (이어선 안천대군, d. 1274)
- 2nd son: Yi Jin, Grand Prince Anwon (이진 안원대군)
- 3rd son: Yi Jeong, Grand Prince Anpung (이정 안풍대군)
- 4th son: Yi Haeng-ni (이행리)
- 5th son: Yi Mae-bul, Grand Prince Anchang (이매불 안창대군)
- 6th son: Yi Gu-su, Grand Prince Anheung (이구수 안흥대군)