| Lady Seongmu | |||||||||
| Succession: | Royal consort of Goryeo | ||||||||
| Reign-Type: | Tenure | ||||||||
| Predecessor: | Lady Sohwangjuwon | ||||||||
| Successor: | Lady Uiseongbuwon | ||||||||
| Father: | Bak Ji-yun | ||||||||
| Spouse: | Taejo of Goryeo | ||||||||
| Issue: | Prince Hyoje Prince Hyomyeong Prince Beopdeung Prince Jari Princess Wang | ||||||||
| Birth Date: | ? | ||||||||
| Birth Place: | Pyeongsan, North Hwanghae Province | ||||||||
| Death Date: | ? | ||||||||
| Death Place: | Pyeongsan, North Hwanghae Province | ||||||||
| House: | Pyeongsan Bak (by birth) House of Wang (by marriage) | ||||||||
| Religion: | Buddhism | ||||||||
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Lady Seongmu of the Pyeongsan Bak clan[1] was the daughter of Bak Ji-yun, one of Wang Geon's helper in founding the new Goryeo dynasty who became the 26th wife of Taejo of Goryeo.[2] She gave birth to 4 sons[3] and a daughter who later married King Gyeongsun of Silla,[4] [5] but all of her sons died young without left any issue. Since both of Bak Su-mun and Bak Su-gyeong were her brothers, she then became the aunt of her husband's 28th and 29th wife.