Park Gyu-su
Park Gyu-su (korean:박규수, hanja:朴珪壽, 1807 – 1877) was a Korean politician, Silhak and Neo-Confucianism philosopher, thinker, and liberal activist. One of his pennames was Hwanjae. His grandfather was Park Ji-won, a famous Silhak and Neo-Confucianism philosopher and novelist.