Sejong the Great

fourth king of Joseon (Korea), creator of Hangul

Sejong (Hangul: 세종; Hanja: 世宗; 15 May 1397 – 30 March 1450), personal name Yi To (Hangul: 이도; Hanja: 李祹), commonly known as Sejong the Great (Hangul: 세종대왕; Hanja: 世宗大王), was the fourth monarch of the Joseon dynasty of Korea. He is regarded as one of the greatest rulers in Korean history, and is remembered as the inventor of Hangul, the native alphabet of the Korean language.

Sejong the Great
세종대왕
世宗大王
Posthumous portrait, 1973
King of Joseon
Reign9 September 1418 – 30 March 1450
EnthronementGeunjeongjeon Hall, Gyeongbok Palace, Hanseong
PredecessorTaejong
SuccessorMunjong
RegentCrown Prince Yi Hyang (1439–1450)
Crown Prince of Joseon
Tenure8 July 1418 – 9 September 1418
PredecessorCrown Prince Yi Je
SuccessorCrown Prince Yi Hyang
BornYi To
(1397-05-15)15 May 1397
Junsu-bang, Hanseong, Joseon
Died30 March 1450(1450-03-30) (aged 52)
Grand Prince Yeongeung's Mansion,[a] Hanseong, Joseon
Burial
Yeongneung Mausoleum, Yeoju, Gyeonggi Province, South Korea
Spouse(s)
Queen Soheon
(m. 1408; died 1446)
Issue
among others...
  • Munjong of Joseon
  • Sejo of Joseon
Full name
Yi To (Hangul: 이도; Hanja: 李祹)
Era dates
1450
Posthumous name
  • Joseon: Great King Jangheon with Cultured Sagacity, Martial Wisdom, Excellent Benevolence,and Brilliant Filial Piety (Hangul: 장헌영문예무인성명효대왕; Hanja: 莊憲英文睿武仁聖明孝大王)[1]
  • Ming dynasty: Jangheon (Hangul: 장헌; Hanja: 莊憲)
Temple name
Sejong (Hangul: 세종; Hanja: 世宗)
ClanJeonju Yi
DynastyYi dynasty
FatherTaejong of Joseon
MotherQueen Wongyeong
ReligionKorean Confucianism (Neo-Confucianism) → Korean Buddhism

He is one of only two Korean kings called "great" (the other is Gwanggaeto the Great of Goguryeo). He picked out young scholars and tried to fix the prejudice of classes by helping intelligent but low-class prodigies. In 1442, he had Jang Yeongsil, a scientist in Joseon, invent the Cheugugi (Hangul: 측우기; Hanja: 測雨器). This was a kind of tool to help measure the rain and how much it fell. Also, he expanded the territory of Joseon.

One of the best works and the biggest reason why Sejong was called great was because he created the Hunminjeongeum (Hangul: 훈민정음; Hanja: 訓民正音). It is called in modern days as Hangul (Korean: 한글). Because of the creation of the Hunminjeongeum, Joseon (now Korea) now got its own alphabet, and many people, most of whom have never learned how to read Hanja (Chinese characters used for Korean) could learn how to read and write much more easily than before.

Early life

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Sejong was the third son of King Taejong. When he was twelve, he became grand prince and married Shim On of Cheongsong. When he was young, he was very good at studying. His father liked him more than his other brothers.

His older brothers, Yangnyeong and Hyoryeong, thought they were not fit to be king and that it was their duty to make Sejong the king, even though he was younger than them. So they acted rudely and badly in front of the court and were soon banished.

Yangnyeong became a traveler who wandered in the mountains, and Hyoryeong became a Buddhist monk. This later became a heartfelt and traditional legend in South Korea.

Reign (1418–1450)

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In 1418, Sejong replaced his eldest brother, Yi Je, as crown prince; a few months later, Taejong voluntarily abdicated the throne in Sejong's favor.

In the early years of Sejong's reign, King Emeritus Taejong retained vast powers, most notably military power, and continued to govern until his death in 1422.[1]

Sejong reinforced Korean Confucian and Neo-Confucian policies, and enacted major legal amendments (Hangul: 공법; Hanja: 貢法).

He personally created and promulgated the Korean alphabet,[2][3] encouraged advancements in science and technology, and introduced measures to stimulate economic growth. He launched military campaigns to the north and implemented a relocation policy (Hangul: 사민정책; Hanja: 徙民政策), establishing settlements in the newly conquered areas.

To the south, he ordered the Ōei invasion of Tsushima to repel and subjugate the Japanese pirates, but the campaign was unsuccessful.[4][5]

From 1439, he became increasingly ill[6] and his eldest son, Crown Prince Yi Hyang, acted as regent. Sejong died on March 1450.

References

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  1. 1.0 1.1 세종실록 1권, 총서.
  2. Kim-Renaud (2021), p. 15.
  3. "알고 싶은 한글" [The Korean language I want to know]. National Institute of Korean Language (in Korean). Retrieved 4 December 2017.
  4. 세종실록 4권, 세종 1년 7월 9일 임자 5번째기사.
  5. 세종실록 4권, 세종 1년 7월 22일 계해 6번째기사.
  6. 세종실록 85권, 세종 21년 6월 21일 정유 3번째기사.
  1. At the time, the residence was also called the Eastern Detached Palace (동별궁; 東別宮; Dongbyeolgung); today, it is known as the Andong Detached Palace (안동별궁; 安洞別宮; Andongbyeolgung).
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Preceded by
King Taejong
King of Joseon Dynasty
1418-1450
Succeeded by
King Munjong