This is a portrait of Jeong Mong-ju, an official and scholar at the end of Goryeo. Also called Po-eun, he is famous for his unwavering loyalty to the Goryeo Dynasty. This portrait painted by a court painter named Yi Han-cheol in 1880 is a copy of another portrait, which was enshrined at Sungyang Seowon in Gaeseong. A seowon was a type of private educational institution during the Joseon period. Jeong Mong-ju greatly contributed to the renaissance of Seonggyungwan and the development of Neo-Confucianism, together with Kim Gu-yong, Yi Sung-in, and Park Sang-chung, when the eminent scholar Yi Saek was daesaseong, practically the highest position at Seonggyungwan. Jeong Mong-ju’s knowledge of Neo-Confucianism was so profound and accurate that Yi Saek praised Jeong Mong-ju even as the “father of Goryeo Neo-Confucianism.” Unlike most of the radical, up-and-coming officials at the end of the Goryeo period, Jeong Mong-ju did not cooperate with Yi Seong-gye and his party. He was unafraid of death and was finally assassinated. This is why he became a symbol of loyalty among scholars with high virtues in later days.