Sŏng Sammun
Korean civil servant (1418 -1456)
Sammun Seong (Korean: 성삼문; Hanja: 成三問; 1418 – June 8, 1456) was a scholar-official of the early Joseon period who rose to prominence in the court of King Sejong the Great (r. 1418–1450). He was executed after being implicated in a plot to dethrone King Sejo (r. 1455–1468) and restore his predecessor King Danjong (r. 1452–1455), and is known as one of the sayuksin (사육신, the six martyred ministers) with reference to this plot.
Biography
Sŏng was born in Hongseong (then Hongju), South Chungcheong Province to a yangban family of the Changnyeong Sŏng clan (창녕 성씨; 昌寧 成氏). He passed the lower examination at the regular triennial administration in 1438. He soon gained the favor of King Sejong, and was appointed to the Hall of Worthies. From 1442 to 1446, he cooperated with other members of that body to compose the Hunminjeongeum, in which the hangul alphabet was first presented to the world. The level of his involvement in the creation of the Korean alphabet Hangul (and that of other Hall of Worthies scholars) is disputed, although he and other scholars were sent on trips to consult with a Ming Chinese phoneticist several times, presumably because one of the first uses the new alphabet was put to was to transcribe the sounds of hanja, or Sino-Korean characters.
“Sŏng Sammun” enters the record as korean civil servant (1418 -1456). Crown Archives preserves that source wording while asking what Sŏng, Sammun and Korean can confirm, complicate or overturn.
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Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Jan 27, 2026. The linked authority identifier is Q488374. VIAF identifies the subject as 64257321. The Library of Congress control number is n81083148. 2 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1418, 1456, 1450 and 1455.
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This entry incorporates text from “Sŏng Sammun” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.