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Sejong of Joseon (15 May 1397 – 8 April 1450), personal name Yi Do ( Korean: 이도; Hanja: 李祹), widely known as Sejong the Great ( Korean: 세종대왕; Hanja: 世宗大王), was the fourth ruler of the Joseon dynasty of Korea. Initially titled Grand Prince Chungnyeong ( Korean: 충녕대군; Hanja: 忠寧大君), he was born as the third son of
King Taejong Taejong of Joseon (13 June 1367 – 8 June 1422), personal name Yi Bang-won ( Korean: 이방원; Hanja: 李芳遠), was the third ruler of the Joseon dynasty of Korea and the father of King Sejong the Great. Before ascending to the throne, he ...
and
Queen Wongyeong Queen Wongyeong (원경왕후 민씨; 29 July 1365 – 18 August 1420) of the Yeoheung Min clan, was the primary wife of Taejong of Joseon, and the mother of Sejong the Great. She was queen consort of Joseon from 1400, and was honored as Queen ...
. In 1418, he was designated as
heir Inheritance is the practice of receiving private property, titles, debts, entitlements, privileges, rights, and obligations upon the death of an individual. The rules of inheritance differ among societies and have changed over time. Officiall ...
after his eldest brother, Crown Prince Yi Je, was stripped of his status. Today, King Sejong is regarded as one of the greatest leaders in Korean history. Despite ascending to the throne after his father's voluntary abdication in 1418, Sejong was a mere figurehead while Taejong continued to hold the real power and govern the country up till his death in 1422. Sejong was the sole monarch for the next 28 years, although after 1439 he became increasingly ill, and starting from 1442, his eldest son, Crown Prince Yi Hyang (the future King Munjong), acted as regent. Sejong reinforced Korean Confucian and Neo-Confucian policies, and enacted major legal amendments (공법, 貢法). He personally created and promulgated the Korean alphabet (today known as hangul), encouraged advancements in science and technology, and introduced measures to stimulate economic growth. He dispatched military campaigns to the north and instituted the ''Samin Jeongchaek'' ("Peasants Relocation Policy"; 사민정책, 徙民政策) to attract new settlers to the region. To the south, he helped subjugate
Japanese pirates ''Wokou'' (; Japanese language, Japanese: ''Wakō''; Korean language, Korean: 왜구 ''Waegu''), which literally translates to "Japanese pirates" or "dwarf pirates", were pirates who raided the coastlines of China and Korea from the 13th centur ...
, during the Ōei Invasion.


Name

Although the appellation "the Great" (대왕, 大王) was posthumously given to almost every monarch from the Goryeo and
Joseon Joseon (; ; Middle Korean: 됴ᇢ〯션〮 Dyǒw syéon or 됴ᇢ〯션〯 Dyǒw syěon), officially the Great Joseon (; ), was the last dynastic kingdom of Korea, lasting just over 500 years. It was founded by Yi Seong-gye in July 1392 and re ...
dynasties, this style is usually associated with
Gwanggaeto Gwanggaeto the Great (374–413, r. 391–413) was the nineteenth monarch of Goguryeo. His full posthumous name means "Entombed in ''Gukgangsang'', Broad Expander of Domain, Peacemaker, Supreme King", sometimes abbreviated to ''Hotaewang'' ...
and Sejong.


Early life

He was born on 10 April 1397, which was later adjusted to 15 May, after Korea's adoption of the Gregorian calendar in 1896. This date is his officially recognized birthday, and is celebrated along with National Teachers Day in South Korea. Sejong was the son of
King Taejong Taejong of Joseon (13 June 1367 – 8 June 1422), personal name Yi Bang-won ( Korean: 이방원; Hanja: 李芳遠), was the third ruler of the Joseon dynasty of Korea and the father of King Sejong the Great. Before ascending to the throne, he ...
by his wife,
Queen Wongyeong Queen Wongyeong (원경왕후 민씨; 29 July 1365 – 18 August 1420) of the Yeoheung Min clan, was the primary wife of Taejong of Joseon, and the mother of Sejong the Great. She was queen consort of Joseon from 1400, and was honored as Queen ...
.''Encyclopedia of World History'', Vol II, P362 Sejong, Edited by Marsha E. Ackermann, Michael J. Schroeder, Janice J. Terry, Jiu-Hwa Lo Upshur, Mark F. Whitters, When he was twelve, he became Grand Prince Chungnyeong (충녕대군). During childhood, he was favored by his father over his two older brothers. As the third son of the king, his ascension to the throne was unique. Taejong's eldest son, Yi Je (이제), was named heir apparent in 1404. However, his free spirited nature as well as his preference for hunting and leisure activities resulted in his removal from the position in June 1418. Though it is said that he abdicated in favor of Sejong, there are no definitive records. Taejong's second son,
Grand Prince Hyoryeong Grand Prince Hyoryeong (Hangul: 효령대군, Hanja: 孝寧大君; 6 January 1396 – 12 June 1486), personal name Yi Bo (Hangul: 이보, Hanja: 李補), was the second son and fifth child of King Taejong of Joseon and his wife, Queen Wongyeong ...
(효령대군), became a Buddhist monk upon the elevation of his younger brother. Following Yi Je's demotion, Taejong moved quickly to secure his third son's place as heir apparent, and the government was purged of officials who disagreed with the change. In September 1418, Taejong abdicated. However, even in retirement he continued to influence government policy. Sejong's surprising political skill and creativity did not become apparent until after his father's death in 1422.


Governance


Religion

King Sejong reorganized the government by appointing people from different social classes as civil servants. Furthermore, he performed government ceremonies according to Confucianism, and encouraged people to behave according to the teachings of Confucius. He suppressed Buddhism by banning outside monks from entering
Hanseong Seoul (; ; ), officially known as the Seoul Special City, is the capital and largest metropolis of South Korea.Before 1972, Seoul was the ''de jure'' capital of the Democratic People's Republic of Korea (North Korea) as stated iArticle 103 of ...
(modern Seoul) and reduced the seven schools of Buddhism down to two, ''Seon'' and ''Gyo'', drastically decreasing the power and wealth of the religious leaders. One of the key factors in this suppression was Sejong's reform of the land system. This policy resulted in temple lands being seized and redistributed for development, with the monks losing large amounts of economic influence. During the
Goryeo dynasty Goryeo (; ) was a Korean kingdom founded in 918, during a time of national division called the Later Three Kingdoms period, that unified and ruled the Korean Peninsula until 1392. Goryeo achieved what has been called a "true national unificati ...
, monks wielded a strong influence in politics and the economy. With the dominant powers of Joseon now being devout Confucianists, Buddhism was considered a false philosophy and the monks were viewed as corrupted by power and money. The
Seokbosangjeol The ''Seokbosangjeol'' (釋譜詳節) is a Korean biography of Gautama Buddha, together with a selection of his sermons, collected and compiled by Prince Suyang (later King Sejo) of Joseon. The book is translated from Chinese sources, including th ...
, a 24-volume Korean-language translation of Chinese Buddhist texts (a biography of Buddha and some of his sermons), was commissioned and published in Sejong's reign by his son Suyang, as an act of mourning for Queen Soheon. In 1427, Sejong also gave a decree against the Huihui ( Korean Muslim) community that had held special status and stipends since Yuan dynasty's rule over Goryeo. The Huihui were forced to abandon their headgear, to close down their "ceremonial hall" (a mosque in the city of
Gaegyeong Kaesong (, ) is a special city in the southern part of North Korea (formerly in North Hwanghae Province), and the capital of Korea during the Taebong kingdom and subsequent Goryeo dynasty. The city is near the Kaesong Industrial Region close to ...
, in present-day
Kaesong Kaesong (, ) is a special city in the southern part of North Korea (formerly in North Hwanghae Province), and the capital of Korea during the Taebong kingdom and subsequent Goryeo dynasty. The city is near the Kaesong Industrial Region close t ...
) and worship like everyone else. No further mention of Muslims exist during the Joseon era.


Economy

In the early years of the Joseon dynasty, the economy was based on a barter system with cloth, grain, and cotton being the most common forms of currency. In 1423, under King Sejong’s administration, the government attempted to develop a national currency modeled off of the Tang dynasty's '' Kaiyuan Tongbao''. The ''
Joseon Tongbo The Joseon Tongbo (Hangul: 조선통보; Hanja: 朝鮮通寶) was an inscription used on Korean cash coins during the Joseon period first from 1423 until 1425 and later again from 1625 until 1633. Initially the attempt to introduce coinage to ...
'' was a bronze coin, backed by a silver standard, with 150 coins being equal to 600 grams of silver. Production of the Joseon Tongbo ceased in 1425 because they were too expensive to make, with the exchange rate falling to less than the intrinsic value of the coin.


Foreign policy

Sejong collaborated closely with China's Ming dynasty. In relations with Jurchen people, he installed ten military posts (사군육진, 四郡六鎭), in the northern part of the
peninsula A peninsula (; ) is a landform that extends from a mainland and is surrounded by water on most, but not all of its borders. A peninsula is also sometimes defined as a piece of land bordered by water on three of its sides. Peninsulas exist on all ...
. He opened three ports to trade with Japan. However, he also launched expeditions to crush Japanese pirates (known as ''
Waegu ''Wokou'' (; Japanese: ''Wakō''; Korean: 왜구 ''Waegu''), which literally translates to "Japanese pirates" or "dwarf pirates", were pirates who raided the coastlines of China and Korea from the 13th century to the 16th century.East China Sea The East China Sea is an arm of the Western Pacific Ocean, located directly offshore from East China. It covers an area of roughly . The sea’s northern extension between mainland China and the Korean Peninsula is the Yellow Sea, separated b ...
.


Military

King Sejong was an effective military planner. He created various military regulations to strengthen the safety of his kingdom, and supported the advancement of military technology, including cannon development. Different kinds of mortars and fire
arrow An arrow is a fin-stabilized projectile launched by a bow. A typical arrow usually consists of a long, stiff, straight shaft with a weighty (and usually sharp and pointed) arrowhead attached to the front end, multiple fin-like stabilizers c ...
s were tested as well as the use of gunpowder. In June 1419, under the advice and guidance of his father, Sejong embarked upon the Ōei Invasion. The ultimate goal of this military expedition was to remove the nuisance of
Japanese pirates ''Wokou'' (; Japanese language, Japanese: ''Wakō''; Korean language, Korean: 왜구 ''Waegu''), which literally translates to "Japanese pirates" or "dwarf pirates", were pirates who raided the coastlines of China and Korea from the 13th centur ...
who had been operating close to Tsushima Island. During the invasion, 245 Japanese were killed, and another 110 were captured in combat, while 180 Korean soldiers died. More than 150 kidnap victims (146 Chinese and 8 Koreans) were also liberated. A truce was made in July 1419 and the Joseon army returned to the Korean peninsula, but no official documents were signed until 1443. In this agreement, known as the Treaty of Gyehae, the ''
daimyo were powerful Japanese magnates, feudal lords who, from the 10th century to the early Meiji period in the middle 19th century, ruled most of Japan from their vast, hereditary land holdings. They were subordinate to the shogun and nominally ...
'' of Tsushima promised to pay tribute to the king of Joseon, and in return, the Joseon court rewarded the Sō clan with preferential rights regarding trade between the two countries. In 1433, Sejong sent Gim Jong-seo (김종서, 金宗瑞), a prominent general, to the north to destroy the Jurchens (later known as the Manchus). Gim's military campaign captured several fortresses, pushed north, and expanded Korean territory, to the Songhua River. Four counties and six commanderies were established to safeguard the people from the Jurchens.


Science, technology, and agriculture

In 1420, King Sejong's love for science led him to create an institute within Gyeongbok Palace known as the Hall of Worthies (''Jiphyeonjeon''; literally "Jade Hall"; 집현전, 集賢殿). The institute was responsible for conducting scientific research with the purpose of advancing the country's technology. The Hall of Worthies was meant to be a collection of Joseon's best and brightest thinkers, with the government offering grants and scholarships to encourage young scholars to attend. Sejong promoted the sciences. He wanted to help farmers so he decided to create a farmer's handbook. The book—''Nongsa Jikseol'' (농사직설, 農事直說)—contained information about the different farming techniques that were gathered by scientists from different regions of Korea. These techniques were needed in order to maintain the newly adopted methods of intensive and continuous cultivation. One of his close associates was the great inventor Jang Yeong-sil (장영실, 蔣英實). As a young person, Jang was a naturally creative and smart thinker. Sejong noticed his skill and immediately called him to his court in Hanseong. Upon giving Jang a government position and funding for his inventions, officials protested, believing a person from the lower classes should not rise to power among nobles. Sejong instead believed he merited support because of his ability. Jang Yeong-sil created new significant designs for water clocks,
armillary sphere An armillary sphere (variations are known as spherical astrolabe, armilla, or armil) is a model of objects in the sky (on the celestial sphere), consisting of a spherical framework of rings, centered on Earth or the Sun, that represent lines of ...
s, and
sundial A sundial is a horological device that tells the time of day (referred to as civil time in modern usage) when direct sunlight shines by the apparent position of the Sun in the sky. In the narrowest sense of the word, it consists of a flat ...
s. In 1442, Jang Yeong-sil made one of the world's first standardized rain gauges named '' Cheugugi''. This model has not survived, with the oldest existing Korean rain gauge being made in 1770, during the reign of King Yeongjo. According to the
Daily Records of the Royal Secretariat ''Seungjeongwon ilgi'' or ''Journal of the Royal Secretariat'' is a daily record of ''Seungjeongwon'', Royal Secretariat during the Joseon Dynasty of Korea (1392–1910), which records the king's public life and his interactions with the bureaucrac ...
(승정원일기, 承政院日記), Yeongjo wanted to revive the glorious times of King Sejong the Great, and so he read chronicles from that era. When he came across the mention of a rain gauge, Yeongjo ordered a reproduction. Since there is a mark of the Qing dynasty ruler Qianlong (r. 1735–96), dated 1770,Kim (1998), 51. this Korean-designed rain gauge is sometimes misunderstood as having been imported from China. In 1434, Jang Yeong-sil, tasked by King Sejong, invented the ''Gabinja'' (갑인자, 甲寅字), a new type of printing press. This printing press was said to be twice as fast as the previous model and was composed of copper-zinc and lead-tin alloys. Sejong also wanted to reform the Korean calendar system, which was at the time based upon the longitude of the Chinese capital.Kim (1998), 57. He had his astronomers create a calendar with the Joseon capital of
Hanseong Seoul (; ; ), officially known as the Seoul Special City, is the capital and largest metropolis of South Korea.Before 1972, Seoul was the ''de jure'' capital of the Democratic People's Republic of Korea (North Korea) as stated iArticle 103 of ...
as the primary meridian. This new system allowed Joseon astronomers to accurately predict the timing of solar and lunar eclipses. In the realm of traditional Korean medicine, two important treatises were written during his reign. These were the ''Hyangyak Jipseongbang'' and the ''Euibang Yuchwi'', which historian Kim Yong-sik says represents "the Koreans' efforts to develop their own system of medical knowledge, distinct from that of China".


Public welfare

In 1426, Sejong enacted a law that granted government '' nobi'' (slave) women 100 days of maternity leave after childbirth, which, in 1430, was lengthened by one month before childbirth. In 1434, he also granted the husbands 30 days of paternity leave. In order to provide equality and fairness in taxation for the common people, Sejong issued a royal decree to administer a nationwide public opinion poll regarding a new tax system called ''Gongbeop'' in 1430. Over the course of five months, the poll surveyed 172,806 people, of which approximately 57% responded with approval for the proposed reform. Joseon's economy depended on the agricultural output of the farmers, so Sejong allowed them to pay more or less tax according to the fluctuations of economic prosperity and hard times. Because of this, farmers could worry less about tax quotas and instead work at maintaining and selling their crops. It is said that once, when the palace had a significant surplus of food, the king distributed it to poor peasants who needed it.


Literature

In 1429, ''Nongsa Jikseol'' ("Explanations of Agriculture"; 농사직설, 農事直說) was compiled. It was the first book about Korean farming, dealing with agricultural subjects such as planting, harvesting, and soil treatment. Sejong was also a writer. He composed the famous '' Yongbieocheonga'' ("Songs of Flying Dragons"; 1445), ''Seokbo Sangjeol'' ("Episodes from the Life of Buddha"; July 1447), ''Worin Cheongang Jigok'' ("Songs of the Moon Shining on a Thousand Rivers"; July 1447), and ''Dongguk Jeongun'' ("Dictionary of Proper Sino-Korean Pronunciation"; September 1447).


Arts

One of Sejong’s closest friends and mentors was the 15th century musician Park Yeon. Together they composed over two hundred musical arrangements. Sejong’s independent musical compositions include the ''Chongdaeop'' ("Great Achievements"), ''Potaepyeong'' ("Preservation of Peace"), ''Pongnaeui'' ("Phoenix"), and ''Yominrak'' ("A Joy to Share with the People"). ''Yominrak'' continues to be a standard piece played by modern traditional Korean orchestras, while ''Chongdaeop'' and ''Potaepyeong'' are played during the ''
Jongmyo Jerye ''Jongmyo Jerye'' or ''Jongmyo Daeje'' is a rite held for worshipping the late kings and queens of the Joseon Dynasty in Jongmyo Shrine, Seoul, South Korea. It is held every year on the first Sunday of May. The Jongmyo rite is usually accompanie ...
'' (memorials honoring the kings of the Joseon dynasty). In 1418, during Sejong's reign, scholars developed the ''Pyeongyeong'' (편경, 編磬), a lithophone modeled off of the Chinese '' Bianqing''. The Pyeongyeong is a percussion instrument consisting of two rows of 8 pumice slabs hung on a decorative wooden frame with a 16-tone range and struck with an ox horn mallet. It was manufactured using pumice mined from the Gyeonggi Province and was primarily used for ceremonies.


Hangul

King Sejong profoundly affected Korea's history with the creation and introduction of '' hangul'', the native phonetic writing system for the Korean language. Although it is widely assumed that he ordered the Hall of Worthies to invent the script, contemporary records such as the '' Veritable Records of King Sejong'' and Jeong In-ji's preface to the '' Hunminjeongeum Haerye'' emphasize that Sejong invented it himself. Before the creation of the new letters, people in the country primarily wrote using Classical Chinese alongside phonetic writing systems based on Chinese script that predated hangul by hundreds of years, including ''idu'', ''
hyangchal ''Hyangchal'' (, literally "vernacular letters", "local letters", or "corresponded sound") is an archaic writing system of Korea and was used to transcribe the Korean language in Chinese characters. Using the ''hyangchal'' system, Chinese chara ...
'', ''
gugyeol Gugyeol, also ''kwukyel'', is a system for rendering texts written in Classical Chinese into understandable Korean. It was chiefly used during the Joseon Dynasty, when readings of the Chinese classics were of paramount social importance. Thus, ...
'', and '' gakpil''. However, due to the fundamental differences between the Korean and Chinese languages, and the large number of characters that needed to be studied, the lower classes, who often lacked the privilege of education, had much difficulty in learning how to write. To assuage this problem, King Sejong created this unique alphabet (which numbered 28 letters at its introduction, of which four letters have become obsolete) to promote literacy among the common people. Each consonant letter is based on a simplified diagram of the patterns made by the human speech organs (the mouth, tongue and teeth) when producing the sound related to the character, while vowels were formed by combinations of dots and lines representing heaven (a circular dot), earth (a horizontal line) and humanity (a vertical line). Morphemes are built by writing the characters in syllabic blocks. The blocks of letters are then strung together
linearly Linearity is the property of a mathematical relationship (''function'') that can be graphically represented as a straight line. Linearity is closely related to '' proportionality''. Examples in physics include rectilinear motion, the linear re ...
. Hangul was completed in 1443 and published in 1446 along with a 33-page manual titled '' Hunminjeongeum'', explaining what the letters are as well as the philosophical theories and motives behind them. The manual purported that anyone could learn the alphabet in a matter of days. People previously unfamiliar with it can typically pronounce Korean words accurately after only a few hours of study. King Sejong faced backlash from the
noble class Nobility is a social class found in many societies that have an aristocracy. It is normally ranked immediately below royalty. Nobility has often been an estate of the realm with many exclusive functions and characteristics. The characteristi ...
as many disapproved of the idea of a common writing system, with some openly opposing its creation. Many within the nobility believed that giving the peasants the ability to read and write would allow them to find and abuse loopholes within the law. Others felt that hangul would threaten their families’ positions in court by creating a larger pool of civil servants. The Joseon elite continued to use the Chinese '' hanja'' long after Sejong’s death. Hangul was often treated with contempt by those in power and received criticism in the form of nicknames, including ''eonmun'' ("vulgar script"), ''amkeul'' ("women’s script"), and ''ahaekkeul'' ("children’s script"). Despite this, the system gained popularity among women and fiction writers. In 1504, the study and publication of hangul was banned by Yeonsangun. Its spread and preservation can be largely attributed to three main factors: books published for women, its use by Buddhist monks, and the introduction of
Christianity in Korea The practice of Christianity in Korea is marginal in North Korea, but significant in South Korea, where it revolves around two of its largest branches, Protestantism and Catholicism, accounting for 8.6 millionAccording to figures compiled by ...
in 1602. Hangul was brought into the mainstream culture in the 16th century, due to a renaissance in literature and poetry. It continued to gain popularity well into the 17th century, and gained wider use after a period of nationalism in the 19th century. In 1849, it was adopted as Korea’s national writing system, and saw its first use in official government documents. After the Treaty of 1910, hangul was outlawed again until the
liberation of Korea The surrender of the Empire of Japan in World War II was announced by Emperor Hirohito on 15 August and formally signed on 2 September 1945, bringing the war's hostilities to a close. By the end of July 1945, the Imperial Japanese Navy ...
in 1945.


Death

Sejong was blinded by diabetes complications that eventually took his life in 1450. He was buried at ''Yeongneung'' (, ), in the same mound as his wife, Queen Soheon, who died four years earlier. The tomb is located in Yeoju, Gyeonggi Province, South Korea. His successor was his first son, Yi Hyang (posthumously honored as King Munjong). Sejong judged that the sickly Munjong was unlikely to live long, and on his deathbed asked the scholars from the Hall of Worthies to look after his young grandson,
Danjong Danjong of Joseon (18 August 1441 – 17 November 1457), personal name Yi Hong-wi (Korean: 이홍위; Hanja: 李弘暐), was the sixth ruler of the Joseon dynasty of Korea. He was forced to abdicate by his uncle, Grand Prince Suyang (the futu ...
. As predicted, Munjong died two years after his ascension, and the political stability enjoyed in the past decades disintegrated when Danjong became the sixth king of Joseon at the age of twelve. Eventually, Sejong's second son, Grand Prince Suyang (later known as King Sejo), usurped the throne in 1455. When six court officials were implicated in a plot to restore his nephew, Sejo abolished the Hall of Worthies and executed Danjong along with several ministers who served during Sejong's reign.


Family

*Father:
King Taejong of Joseon Taejong of Joseon (13 June 1367 – 8 June 1422), personal name Yi Bang-won ( Korean: 이방원; Hanja: 李芳遠), was the third ruler of the Joseon dynasty of Korea and the father of King Sejong the Great. Before ascending to the throne, he ...
(조선 태종) (13 June 1367 – 30 May 1422) **Grandfather:
King Taejo of Joseon Taejo of Joseon (4 November 1335 – 27 June 1408), born Yi Seong-gye (), was the founder and first ruler of the Joseon dynasty of Korea. After ascending to the throne, he changed his name to Yi Dan (), and reigned from 1392 to 1398. He was ...
(조선 태조) (27 October 1335 – 18 June 1408) **Grandmother: Queen Sinui of the Cheongju Han clan (신의왕후 한씨) (September 1337 – 21 October 1391) *Mother:
Queen Wongyeong Queen Wongyeong (원경왕후 민씨; 29 July 1365 – 18 August 1420) of the Yeoheung Min clan, was the primary wife of Taejong of Joseon, and the mother of Sejong the Great. She was queen consort of Joseon from 1400, and was honored as Queen ...
of the Yeoheung Min clan (원경왕후 민씨) (11 July 1365 – 10 July 1420) **Grandfather: Min Je (민제) (1339 – 1408) **Grandmother: Lady Song of the
Yeosan Song clan Yeosan Song clan () is one of the oldest Korean clans. Their Bon-gwan was in Yeosan, present day Iksan, North Jeolla Province North Jeolla Province (; ''Jeollabuk-do''), also known as Jeonbuk, is a province of South Korea. North Jeolla has a ...
(여산 송씨) (1342 – 1424) Consorts and their respective issue(s): # Queen Soheon of the Cheongsong Shim clan (소헌왕후 심씨) (12 October 1395 – 19 April 1446) ## Princess Jeongso (정소공주) (1412 – 1424), first daughterAs a legitimate daughter of the king, her title properly translates to "Royal Princess" (''Gongju''; 공주, 公主). ## Crown Prince Yi Hyang (왕세자 이향) (15 November 1414 – 1 June 1452), first son ## Princess Jeongui (정의공주) (1415 – 11 February 1477), second daughter ## Yi Yu, Grand Prince Suyang (수양대군 이유) (2 November 1417 – 23 September 1468), second son ## Yi Yong, Grand Prince Anpyeong (안평대군 이용) (18 October 1418 – 18 November 1453), third son ## Yi Gu, Grand Prince Imyeong (임영대군 이구) (6 January 1420 – 21 January 1469), fourth son ## Yi Yeo, Grand Prince Gwangpyeong (광평대군 이여) (2 May 1425 – 7 December 1444), fifth son ## Yi Yu, Grand Prince Geumseong (금성대군 이유) (5 May 1426 – 7 November 1457), seventh son ## Yi Im, Grand Prince Pyeongwon (평원대군 이임) (18 November 1427 – 16 January 1445), ninth son ## Yi Yeom, Grand Prince Yeongeung (영응대군 이염) (23 May 1434 – 2 February 1467), fifteenth son # Royal Noble Consort Yeong of the Jinju Gang clan (영빈 강씨)Concubine of the first senior rank (''Bin''; 빈, 嬪). ## Yi Yeong, Prince Hwaui (화의군 이영) (1425 – 1460), sixth son # Royal Noble Consort Shin of the Cheongju Gim clan (신빈 김씨) (1406 – 4 September 1464) ## ''Third daughter'' (? – 1426) ## Yi Jeung, Prince Gyeyang (계양군 이증) (1427 – 16 August 1464), eighth son ## Yi Gong, Prince Uichang (의창군 이공) (1428 – 1460), tenth son ## ''Fifth daughter'' (? – 1429) ## Yi Chim, Prince Milseong (밀성군 이침) (1430 – 1479), twelfth son ## Yi Yeon, Prince Ikhyeon (익현군 이연) (1431 – 1463), fourteenth son ## Yi Dang, Prince Yeonghae (영해군 이당) (1435 – 1477), seventeenth son ## Yi Geo, Prince Damyang (담양군 이거) (1439 – August 1450), eighteenth son # Royal Noble Consort Hye of the Cheongju Yang clan (혜빈 양씨) (? – 9 November 1455) ## Yi Eo, Prince Hannam (한남군 이어) (5 October 1429 – 29 June 1459), eleventh son ## Yi Hyeon, Prince Suchun (수춘군 이현) (1431 – 1455), thirteenth son ## Yi Jeon, Prince Yeongpung (영풍군 이전) (17 September 1434 – 22 July 1456), sixteenth son # Royal Consort Gwi-in of the Miryang Park clan (귀인 박씨)Concubine of the first junior rank (''Gwi-in''; 귀인, 貴人). Promoted in 1428. # Royal Consort Gwi-in of the Jeonju Choe clan (귀인 최씨) # Royal Consort Sug-ui of the Jo clan (숙의 조씨) # Royal Consort Sug-yong of the Hong clan (숙용 홍씨) (? – 4 February 1452) # Royal Consort Sug-won of the Yi clan (숙원 이씨) ## Princess Jeongan (정안옹주) (1438 – 1461), seventh daughter # Court Lady Song (상침 송씨) (1396 – 1463) ## Princess Jeonghyeon (정현옹주) (1425 – 1480), fourth daughter # Court Lady Cha (사기 차씨) (? – 10 July 1444) ## ''Sixth daughter'' (1430 – 1431)


Ancestry


Legacy


Statue and museum exhibit

In 2009, a bronze statue of King Sejong was placed on a concrete pedestal on the boulevard of Gwanghwamun Square and directly in front of the Sejong Center for the Performing Arts in Seoul. The sculptor was Kim Young-won. The pedestal contains one of the several entrances to the 3,200 m2 underground museum exhibit entitled "The Story of King Sejong". It was unveiled on Hangul Day in celebration of the 563rd anniversary of the invention of the Korean alphabet.


Namesake from Sejong

Sejong Street (''Sejongno''; 세종로, 世宗路) and the Sejong Centre for the Performing Arts, both located in central Seoul, are named after King Sejong. In early 2007, the government of the Republic of Korea decided to create a special administrative district from a part of the South Chungcheong Province, near what is presently Daejeon. The district was named " Sejong Special Autonomous City".


Portrait in Korean currency

A portrait of Sejong is featured on the 10,000 won banknote of the
South Korean won The Korean Republic won, unofficially the South Korean won ( Symbol: ₩; Code: KRW; Korean: 대한민국 원) is the official currency of South Korea. A single won is divided into 100 jeon, the monetary subunit. The jeon is no longer used f ...
, along with various scientific tools invented under his reign.


In popular culture


Dramas and films

His life was depicted in the KBS historical drama ''
The Great King, Sejong ''The Great King, Sejong'' () is a 2008 South Korean historical television series depicting the life of the fourth monarch of Joseon, Sejong the Great (played by Kim Sang-kyung). Considered one of the greatest kings in Korean history, Sejong c ...
'' in 2008. * Portrayed by Han In-soo in the 1983 MBC TV series ''500 Years of Joseon dynasty: Tree with Deep Roots.'' * Portrayed by Song Jae-ho in the 1998–2000 KBS TV series ''King and Queen.'' * Portrayed by Lee Hyun-woo and
Kim Sang-kyung Kim Sang-kyung (born June 1, 1972; ) is a South Korean actor. He is known for his leading roles in ''Memories of Murder'' (2003) and ''May 18'' (2007). Two of his films directed by Hong Sang-soo, ''Tale of Cinema'' (2005) and '' Ha Ha Ha'' (20 ...
in the 2008 KBS2 TV series ''
The Great King, Sejong ''The Great King, Sejong'' () is a 2008 South Korean historical television series depicting the life of the fourth monarch of Joseon, Sejong the Great (played by Kim Sang-kyung). Considered one of the greatest kings in Korean history, Sejong c ...
.'' * Portrayed by Ahn Sung-ki in the 2008 film ''
The Divine Weapon ''The Divine Weapon'' () is a 2008 South Korean film. Plot During the reign of King Sejong the Great, Joseon Korea faces increasing hostility from Ming China. Ming China, without restraint, mounts unrelenting demands against the Korean crown, ...
''. * Portrayed by Jeon Moo-song in the 2011 JTBC TV series ''
Insu, The Queen Mother ''Insu, the Queen Mother'' () is a 2011 South Korean historical television series, starring Chae Shi-ra, Hahm Eun-jung, Kim Young-ho, Kim Mi-sook, Baek Sung-hyun and Jeon Hye-bin. Focusing on the fierce power struggle among three women in the ro ...
''. * Portrayed by Kang San, Song Joong-ki and Han Suk-kyu in the 2011 SBS TV series '' Deep Rooted Tree''. * Portrayed by
Ju Ji-hoon Ju Ji-hoon (born May 16, 1982) is a South Korean actor and model. His first leading role was in the 2006 hit drama ''Princess Hours''. His other notable works include ''The Devil'', ''Antique'', ''Mask'', '' Along with the Gods: The Two Worlds'' ...
in the 2012 film ''
I Am the King ''I Am the King'' (, also known as ''I Am a King'') is a 2012 South Korean historical comedy film, starring Ju Ji-hoon, Park Yeong-gyu, Baek Yoon-sik, Byun Hee-bong and Kim Su-ro. Inspired by Mark Twain's 1881 novel ''The Prince and the Pauper'', ...
''. * Portrayed by Yoon Doo-joon in the 2015 MBC TV series '' Splash Splash Love''. * Portrayed by Nam Da-reum in the 2015 SBS TV series '' Six Flying Dragons.'' * Portrayed by
Kim Sang-kyung Kim Sang-kyung (born June 1, 1972; ) is a South Korean actor. He is known for his leading roles in ''Memories of Murder'' (2003) and ''May 18'' (2007). Two of his films directed by Hong Sang-soo, ''Tale of Cinema'' (2005) and '' Ha Ha Ha'' (20 ...
in the 2016 KBS1 TV series '' Jang Yeong-sil''. * Portrayed by Han Suk-kyu in the 2019 film ''
Forbidden Dream ''Forbidden Dream'' () is a 2019 South Korean historical drama film directed by Hur Jin-ho and written by Jung Bum-shik and Lee Ji-min. Based on a true story, it portrays Sejong the Great (Han Suk-kyu), king of the Joseon dynasty of Korea, a ...
.'' * Portrayed by Song Kang-ho in the 2019 film ''
The King's Letters ''The King's Letters'' (Korean: 나랏말싸미, RR: ''Naranmalssami''; Middle Korean: 나랏말ᄊᆞ미, Yale: ''Nalasmalssomi''; ''Language of the Country'') is a Korean historical drama film released on 24 July 2019. Set in the early Joseon ...
.'' * Portrayed by Jang Dong-yoon in the 2021 SBS TV series ''
Joseon Exorcist ''Joseon Exorcist'' () is a South Korean historical-supernatural television series. The series, directed by Shin Kyung-soo and written by Park Gye-ok, stars Jang Dong-yoon, Park Sung-hoon and Kam Woo-sung. The series follows the fight of the r ...
.'' * Portrayed by Kim Min-ki in the 2021–2022 KBS1 TV Series ''
The King of Tears, Lee Bang-won ''The King of Tears, Lee Bang-won'' () is a South Korean television series starring Joo Sang-wook in the title role. With this series, KBS is reviving the historical drama series after 5 years, as the last KBS historical series ''Jang Yeong-si ...
''.


Video games

*Leader of the Korean civilization in '' Sid Meier's Civilization V.'' *Leader of the Korean civilization in ''
Civilization Revolution 2 ''Sid Meier's Civilization Revolution 2'' is a 4X turn-based strategy video game for portable platforms, developed in 2014 by Firaxis Games with Sid Meier as designer. It is a spin-off of the ''Civilization'' series and a sequel to '' Civilizati ...
.'' * King Sejong Station LE, a major tournament map in the game '' StarCraft II: Heart of the Swarm.'' *Starting ruler of Korea in '' Europa Universalis IV.''


See also

*
King Sejong Institute King Sejong Institute () is the brand name of Korean-language institutes established by the South Korean government around the world since 2007. The institute's name refers to Sejong the Great, the inventor of the Korean alphabet. As of June 2021 ...
* King Sejong Station * Sejong Center *
Sejong City Sejong (; ), officially the Sejong Special Self-Governing City (), is a special self-governing city and ''de facto'' administrative capital of South Korea. Sejong was founded in 2007 as the new planned capital of South Korea from many parts of ...
* * Sejongno *
UNESCO King Sejong Literacy Prize The UNESCO King Sejong Literacy Prize (Korean, Hangeul : 유네스코 세종대왕 문해상) is an annual prize awarded to three institutions, organizations or individuals "for their contribution to the fight against illiteracy." It is funded by t ...
* Hunminjeongeum * Hangul


Notes


Further reading

*Kim, Yung Sik. (1998). "Problems and Possibilities in the Study of the History of Korean Science," ''Osiris'' (2nd series, Volume 13, 1998): 48–79. *''King Sejong the Great: the Light of Fifteenth Century Korea'', Young-Key Kim-Renaud,
International Circle of Korean Linguistics The International Circle of Korean Linguistics is a scholarly organization dedicated to the promotion of awareness of, the dissemination of information about, and the facilitation of communication among those in the field of, Korean language and l ...
, 1992, softcover, 119 pages, . *Kim-Renaud, Young-Key. 2000. Sejong's theory of literacy and writing. ''Studies in the Linguistic Sciences'' 30.1:13–46. *Gale, James Scarth. ''History of the Korean People'' Annotated and introduction by Richard Rutt. Seoul: Royal Asiatic Society, 1972.


External links


King Sejong's Confucian Humanism in the Early Choson PeriodLocation of the four forts and the six postsKing Sejong the Great: The Everlasting Light of Korea.
{{DEFAULTSORT:Sejong The Great 1397 births 1450 deaths 15th-century Korean monarchs Creators of writing systems Deaths from diabetes Linguists from Korea Korean Buddhists Korean Confucianists People from Seoul