The Diocese of Atri (Latin: Dioecesis Hatriensis seu Atriensis) was a Roman Catholic diocese located in the town of Atri in the Province of Teramo in the Abruzzo region of Italy. In 1252, it was united with the Diocese of Penne to form the Diocese of Penne e Atri.
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Roman Catholic Diocese of Atri Wikipedia(Text) CC BY-SA