Wikipedia
Munsin (deity)
Not to be confused with Jules Munshin, a song-and-dance artist.
Munshin ( Hangul: 문신, Hanja: 門神, literally Door god), known in the southernly Jeju Island as Munjeon ( Hangul: 문전, Hanja: 門前) is the god of the door in Korean shamanism. The worship of Munshin is strongest in Jeju Island, where Munshin (known as Munjeon) is one of the most-worshipped deities; however, the worship of Munshin also exists in the mainland.