Tags: Clerical Administrative Region, Diocese.
The Roman Catholic Diocese of Mostar-Duvno is an ecclesiastical territory or diocese of the Roman Catholic Church encompassing Herzegovina. The diocese as well as the Franciscan Province is centred in the city of Mostar Bosnia and Herzegovina. It was formed on July 5 1881. However the Diocese of Duvno existed long before 1881 and was erected sometime in the 6th century. The seat of the bishopric is in the Cathedral of Mary the Mother of the Church.