Presbyterian Church of Korea (PCK) was a Protestant denomination based in South Korea; it is currently separated to many branches. The first Korean Presbyterian minister was Seo Sang-ryun, who founded a church in Hwanghae province in 1884. Shortly thereafter, several foreign Presbyterian missionaries arrived on the peninsula, including Horace Allen, Horace G. Underwood, and Henry Davies. Like other Christian groups, the Korean Presbyterians such as Gil Seon-ju were closely involved in the peaceful March 1st Movement for Korean independence in 1919.