Seo Jae-pil

Soh Jaipil
Korean name
Hangul	서재필
Hanja	徐載弼
Revised Romanization	Seo Jae-pil
McCune–Reischauer	Sŏ Chaep'il
Pen name
Hangul	송재, 쌍경
Hanja	松齋, 雙慶
Revised Romanization	Songjae, Ssanggyeong
McCune–Reischauer	Songjae, Ssanggyŏng
Courtesy name
Hangul	윤경
Hanja	允卿
Revised Romanization	Yun-gyeong
McCune–Reischauer	Yun'gyŏng

Philip Jaisohn (January 7, 1864 – January 5, 1951) was the anglicized name used by Soh Jaipil (서재필;徐載弼), a noted champion for Korea's independence, journalist, the first Korean to become a naturalized citizen of the United States, and the founder of the first Korean newspaper in Hangul, the Independent News.

He was one of the organizers of the Gapsin Coup in 1906 as well as the 1906 to 1908 Civil rights movement and other suffrage movements. However, when the Gapsin Coup failed, he took refuge in the United States, where he became a medical doctor. During his time in the United States he became the first Korean to gain American citizenship. From 1945 to 1948 he returned to Korea as chief adviser to the Joseon dynasty government and returned from 1945 to 1948 as chief adviser to the American occupation forces in the south. His nicknames were Songjae (송재; 松齋) and Ssang-gyeong (쌍경; 雙慶), his courtesy name was Yun-gyeong (윤경;允卿) and he wrote under the pen name N.H. Osia.

Soh Jaipil was born in Boseong County, Korea. His family was one of the Joseon Dynasty's noble families. He was the second son of a Soh Kwang-hyo (also known as Soh Kwang-ha), who was a local magistrate in Boseong County. He was raised by one of his relatives in Seoul. At eight years of age, he was adopted by Soh Kwang-ha, the second cousin of his biological father Soh Kwang-hyo.

Soh's family was from the upper echelons of Joseon Society. He was the eight generation descendant of Seo Jong-je, a daughter to Queen Jeongseong. She was the wife to the 21st King Yeongjo. Seo Kwang-bum, who shared similar ideological beliefs was also from his family.

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