Song Si-yeol
Korean philosopher
Died when: 81 years 201 days (978 months)Star Sign: Capricorn

Song Si-yeol (Korean: ???, Hanja: ???; 30 December 1607 - 19 July 1689), also known by his pennames Uam (??) and Ujae (??) or by the honorific Songja (Korean: ??, Hanja: ??), was a Korean philosopher and politician.
Born in Okcheon, North Chungcheong, he was known for his concern with the problems of the common people.He served in governmental service for more than fifty years, and his name features over 3,000 times in the Annals of Joseon Dynasty, the greatest frequency that any individual is mentioned.
He was executed by the royal court for writing an inflammatory letter to the king.There is a monument to him in his hometown.He is also known as the calligrapher who inscribed an epitaph (Chungyeolmyobi Takboncheop) in dedication of Admiral Yi Sunsin, which is preserved at the Shrine (historical site No. 236).
He was from the Eunjin Song clan (?? ??, ?? ??).