Roman Catholic Diocese of Jeonju Tags: Clerical Administrative Region, Diocese.The Roman Catholic Diocese of Jeonju (Latin: Dioecesis Ieoniuensis) is a diocese of the Latin Rite of the Catholic Church located in Jeonju South Korea. It is a suffragan diocese of the Archdiocese of Gwangju. thumbnail area (km2) 8.05e+09 country South Korea Established 13 April 1937 ( years ago) jurisdiction Diocese province Roman Catholic Archdiocese of Gwangju Learn more... Loading...