Princess Seunggyeong (; died before 1158) or Royal Princess of the Seunggyeong Palace () was a Goryeo Royal Princess as the first and eldest daughter of King Injong and Queen Gongye, also the eldest aunt of Gangjong and Huijong.
In 1148, she, as the High Princess () and her younger sister formally became a princess (). She later married Duke Gangneung's () son, Wang Yeong the Count Gonghwa () and had a daughter and a son together. Their daughter died in 1185 unmarried, while their son married Seunggyeong's niece–Princess Hwasun () and died in 1218.
According to her daughter's epitaph (), Princess Seunggyeong (Lady Wang's mother) died when Wang unreached the age of 7/8 years.〈왕영녀왕씨묘지명(王瑛女王氏墓誌銘)〉 君之宗派父曰開府儀同三司守司徒上柱國 恭化侯瑛母曰承慶宮主王氏 仁廟朝乃姉之外祖也君平生秊未齠齕慈母(중략) "누이의 아버지는 개부의동삼사수사도상주국 공화후 영이며, 어머니는 승경궁공주 왕씨이다. 인종께서 바로 누이의 외조부이다. 누이의 일생은 나이 일여덟 살이 되기도 전에 어머니가 세상을 떠나자 (중략)" From this point, Seunggyeong was believed to have died before 1158 since Wang was born in 1150.
References
승경궁주 on the Encyclopedia of Korean Culture .