조선왕조실록
Jang Geum (fl. early 16th century; family name Seo), originally an "uinyeo" of the "cheonmin" class, became the first female Royal Physician in Korean history. According to the "Annals of the Joseon Dynasty" King Jungjong recognized Jang Geum's medical knowledge and entrusted her the royal care of all royal family members. King Jungjung therefore, promoted Jang Geum to become the third highest-ranking officer in the Court, and was granted the use of "Dae "() (which means "great" in Korean) before her first name.