King yi seong gye and his son

Yi Song-Gye | Joseon Dynasty, Founder, & Facts | Britannica

Taejong of Joseon

Third king of Joseon from 1400 to 1418

Not to be confused with Taejo of Joseon.

Taejong (Korean: 태종; Hanja: 太宗; 16 May 1367 – 10 May 1422),[i][ii] personal name Yi Bang-won (이방원; 李芳遠), was the third monarch of the Joseon dynasty of Korea and the father of Sejong the Great.[1] He was the fifth son of King Taejo, the founder of the dynasty.

Before ascending to the throne, he was known as Prince Jeongan (정안군; 靖安君).

Biography

Early life and founding of Joseon

Born in 1367 as the fifth son of Yi Sŏng-gye and his first wife Lady Han, Yi Pang-wŏn qualified as an official in 1382. He studied under Confucian scholars such as Wŏn Ch'ŏnsŏk.[2][3] During his early years, he assisted his father in gathering the support of the commoners and of many influential figures in the government; Yi Pang-wŏn also helped in the founding of Joseon by assassinating powerful officials who remain Taejo of Joseon - Wikipedia CYF