Seo Jae-chang
Seo Jae-chang (; 29 October 1866 – 13 December 1884) was a Korean politician, serviceperson, liberal ideologist during the Joseon dynasty. He was a member of the reformist Party(개화당;開化黨). In 1884 he was a participant in the Gapsin coup. The coup failed and he was arrested and executed. Seo was the younger brother of Seo Jae-pil. Life Jae-chang was born 1866 In Bosong in South Jeolla Province. He was the fourth son of Seo Gwang-ho, governor of Dongbok County and Lady Lee of Seongju. His elder brothers were Jae-chun, Jae-hyung and Jae-pil and his younger brother was Jae-wu. He had two sisters. He studied in Japan, recommended by Yu Dae-chi and Lee Dong-in. Jae-chang studied sericulture and military science. Later he returned to his country. In 1884 he adopted a distant relation Seo Sang-wu's adopted son. In January to July, 1884, he returned to Japan. He entered a Toyama military school with Jae-pil, but in July he went to Seoul to plan a revolt with Kim Ok-kyun, Park Yeong-hyo and other members of Reformist Partys, Hong Yeong-sik, Park Yeong-kyo, Yun Chi-ho, Yun Ung-ryeol, Jae-pil and his father's fifth cousin Seo Kwang-pum. In October, they undertook the Gapsin coup in Seoul.