Person

Sejo of Joseon

1417–1468 · 15th century · Also known as Grand Prince Suyang

Sejo was the seventh king of Joseon, ruling from 1455 to 1468. A son of Sejong, as Grand Prince Suyang he seized power in 1453 from ministers serving his young nephew Danjong and forced him to abdicate in 1455. He executed officials who plotted Danjong's restoration and abolished the Hall of Worthies. He strengthened royal power and the military, and began the National Code, the Gyeongguk daejeon.

Sejo of Joseon
Image: 김은호 · Public domain · Wikimedia Commons
Cite this entry
APA
The Epoch Institute. (2026). Sejo of Joseon. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/sejo-of-joseon
MLA
“Sejo of Joseon.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/sejo-of-joseon. Accessed .
Chicago
The Epoch Institute. “Sejo of Joseon.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/sejo-of-joseon.
Harvard
The Epoch Institute (2026) ‘Sejo of Joseon’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/sejo-of-joseon (Accessed: ).

Last reviewed October 2026Random entry ↻