Catholic Church. Archdiocese of Prague (Czech Republic)
[Found in 973 by the Duke of Bohemia and the Holy Roman Emperors, the Diocese of Prague was originally a suffragan of the Metropolitan Archdiocese of Mainz. Pope Clement VI elevated the Diocese to a Metropolitan Archdiocese on April 30, 1344.]
found:Dějiny pražské arcidiecéze v datech, 1993:p. 7 (Pražská arcidiecéze, founded in the year 973)
found:Its website, viewed Sept. 26, 2018(Archdiocese of Prague; Arcidiecéze pražská in Czech; Diocese founded in 934; made a metropolitan archdiocese on April 30, 1344) -https://www.cirkev.cz/en/archdiocese-of-prague
found:Wikipedia, viewed Sept. 26, 2018(Roman Catholic Archdiocese of Prague; Metropolitan Catholic archdiocese of the Latin Rite in Bohemia, in the Czech Republic; diocese founded in 973; elevated to a metropolitan archdiocese in 1344; Czech: Arcidiecéze pražská, Latin: Archidioecesis Pragensi) -https://en.wikipedia.org/wiki/Roman_Catholic_Archdiocese_of_Prague
General Notes
[Found in 973 by the Duke of Bohemia and the Holy Roman Emperors, the Diocese of Prague was originally a suffragan of the Metropolitan Archdiocese of Mainz. Pope Clement VI elevated the Diocese to a Metropolitan Archdiocese on April 30, 1344.]