Ladies-in-waiting

Korea

Ladies-in-waiting could become concubines if the king favored them. They would be elevated to the highest rank (senior 5th) and would be known as seungeun sanggung (or 'favored/special court lady'). If they gave birth to a son, they would become members of the royal family, after being promoted to sug-won (junior 4th) and until the 18th century, they could advance as high as becoming queen (the most notable example being Jang Ok-jeong, a concubine of Sukjong of Joseon and mother of Gyeongjong of Joseon).