Queen Hyosun (Korean: 효순왕후 조씨; 8 January 1716 – 30 December 1751), of the Pungyang Jo clan, was the crown princess of Joseon.
[1] Both Hyosun and her husband were posthumously made the adoptive parents of the future King Jeongjo in 1764, in an attempt to distance the boy from the crimes of his birth father, Crown Prince Sado.
Through her paternal grandmother, Lady Jo was a first cousin removed of Queen Ingyeong; the first wife of her father-in-law's father, King Sukjong.
[4] Despite this happening, she was still given the title of Hyeonbin or Crown Princess Consort Hyeon (현빈; 賢嬪) in 1735.
[8] Her brother-in-law, Crown Prince Sado, was killed in 1762 for his actions which prompted Yeongjo to issue a decree that made Hyosun and Hyojang the adoptive parents of Sado's eldest son; in a move seen as an attempt to preserve the boy's legitimacy as an heir.