Princess Heungbang
| Princess Heungbang | |
|---|---|
| Princess of Goryeo | |
| Predecessor | Princess Nakrang | 
| Successor | Queen Daemok | 
| Monarch | Wang Geon, King Taejo | 
| Spouse | Prince Wonjang | 
| Issue | Prince Heungbang Lady Daemyeong | 
| House | House of Wang (by birth and marriage) | 
| Father | Taejo of Goryeo | 
| Mother | Queen Sinmyeong of the Chungju Yu clan | 
| Religion | Buddhism | 
| Korean name | |
| Hangul | 흥방궁주 | 
| Hanja | |
| Revised Romanization | Heungbang Gungju | 
| McCune–Reischauer | Hŭngpang Kungch'u | 
Princess Heungbang was a Goryeo Royal Princess as the youngest daughter of King Taejo and Queen Sinmyeong. She was also the younger sister-in-law of King Gyeongsun of Silla, who later married her half brother, Prince Wonjang. Princess Heungbang had a son Prince Heungbang and a daughter Lady Daemyeong, who would become King Gyeongjong's fifth wife. From her title, Heungbang became the first Korean Princess who held the title Gung-ju (궁주; 宮主). The use of the title Gung-ju for the king's daughter began with the case of Princess Heungbang. In addition, the title Gung-ju was also used for princesses, and this form continued throughout the Goryeo periods.