Roman Catholic Diocese of Fabriano-Matelica Tags: Clerical Administrative Region, Diocese.The Italian Catholic diocese of Fabriano-Matelica (Latin: Dioecesis Fabrianensis-Mathelicensis) in the Marche has existed under this name since 1986. It is a suffragan of the archdiocese of Ancona-Osimo. thumbnail area (km2) 6.81e+08 country Italy Established 15 November 1728 ( years ago) province Roman Catholic Archdiocese of Ancona-Osimo Learn more... Loading...