What key details about sejong the great can be extracted from the following bio? Bio: sejong the great -lrb- may 15 , 1397 -- april 8 , 1450 , r. 1418 -- 1450 -rrb- was the fourth king of joseon-dynasty korea . born with family name yi -lrb- ; -rrb- , given name do -lrb- ; -rrb- , family origin jeonju -lrb- ; -rrb- , sobriquet wonjeong -lrb- ; -rrb- . posthumous name is sejong -lrb- ; -rrb- . posthumous title , abbreviated , is janghun great king -lrb- ; -rrb- , and official title is sejong jangheon yeongmun yemu inseong myeonghyo daewang -lrb- ; -rrb- . 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 , sim on , and his close associates were executed . sejong reinforced confucian policies and executed major legal amendments -lrb- ; -rrb- . 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 instituted the samin policy -lrb- ; -rrb- 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 .
- death date is 8 april 1450- name is sejong daewang- death place is hansung , korea- religion is confucianism