Yu Chin-san (Korean: 유진산; Hanja: 柳珍山; 18 October 1905 – 28 April 1974) was a South Korean independence activist and politician active from the start of the First Republic through the first half of the Fourth Republic. His clan name is Munhwa Ryu, and he was born with the name Youngpil (영필; 永弼) but adopted the name Chin-san and the art name Okgye (옥계; 玉溪) later in life. The name Chin-san uses the same characters as that of his birthplace, Jinsan, in the Geumsan County of South Chungcheong Province. Chin-san’s son, Yu Han-yeol, was also a politician and served consecutive terms in the National Assembly (as a member of the Democratic Korea Party, the New Korea Party, and the Liberty Korea Party). Additionally, the former National Assembly member Seong Nak-hyeon was married to Chin-san’s niece.
Source: “Yu Chin-san”, English Wikipedia (CC BY-SA 4.0), excerpt