Grandprince Jeongwon

Wonjong of Joseon 조선 원종
Born	2 August 1580 Hanseong, Kingdom of Joseon
Died	29 December 1619 Hanseong, Kingdom of Joseon
House	Jeonju Yi
Father	Seonjo of Joseon
Mother	Royal Noble Consort In

Wonjong of Joseon or Prince Jeongwon (2 August 1580 - 29 December 1619) was a prince during the Joseon dynasty. He was an illegitimate son of the Joseon dynasty's 14th monarch, king Seonjo, and half brother of king Gwanghaegun and father of king Injo. His birth name was Yi Bu (이부).

He first held the title of Prince Jeongwon (定遠君, 정원군) and later re-titled as Grand Prince Jeongwon (定遠大院君, 정원대원군). In 1592, during the Japanese invasions of Korea, he escaped with king Seonjo and awarded in 1604 in recognition of helping the king to escape.

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