 Seong Sam-mun

Seong Sammun (1418–1456) was a scholar-official of early Joseon who rose to prominence in the court of King Sejong the Great (ruled 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.