The story
Founded by Catholic Church in the Czech Republic on May 30, 1996.1
Established on May 30, 1996 as Diocese of Ostrava–Opava / Ostravien(sis)–Opavien(sis) (Latin), on territory split off from its Metropolitan, the Archdiocese of Olomouc, which territory was part until 1978 (the former Apostolic Administration of Český Těšín) of the then Diocese of Wrocław (Poland) while that comprised all Silesia.
Attempts to erect a diocese in the territory of today's one had already been made in the past. The papal bull Suprema dispositione of December 5, 1777, by which the ecclesiastical province of Olomouc was established, provided that its suffragans should also include the Diocese of Opava (dioecesis Oppaviensis), which was yet to be erected and was supposed to cover the part of Silesia that remained under Habsburg rule (Austrian Silesia). However, this diocese was never established.
From Wikipedia’s article on Diocese of Ostrava-Opava, shared under CC BY-SA 4.0.5
