Sejong the Great was the fourth king of Joseon. Born with family name Yi (이; 李), given name Do (도; 祹), family origin Jeonju (전주; 全州), sobriquet Wonjung (원정; 元正). Posthumous name is Sejong (세종; 世宗). Posthumous title, abbreviated, is JangHun Great King (장헌대왕; 莊憲大王), and official title is Sejong Jangheon Yeongmun Yemu Inseong Myeonghyo Daewang (세종 장헌 영문 예무 인성 명효 대왕; 世宗 莊憲 英文 睿武 仁聖 明孝 大王). He was the third son between King Taejong and Queen-Consort Min. He was designated as heir-apparent, Grand Prince, after his older brother Jae was stripped of his title. He ascended to the throne in 1418. During the first four years of his reign, Taejong governed as regent, and this was when his father-in-law, Shim Ohn, and his close associates were executed.
Sejong reinforced Confucian policies and executed major legal amendments (공법; 貢法). He also oversaw the creation of Hangul, encouraged advancements of scientific technology, and instituted many other efforts to stabilize and improve prosperity. He dispatched military campaigns to the north and installed Samin Policy (사민정책; 徙民政策) to attract new settlers to the region. To the south, he subjugated Japanese raiders and captured Tsushima Island.
During his reign from 1418 to 1450, he governed from 1418 to 1442 and governed as regent with his son Grand Prince MoonJong until his death in either 1442 or 1450.
Sejong is one of only two Korean rulers posthumously honored with the appellation "the Great", the other being Gwanggaeto the Great of Goguryeo. ...more