Roman Catholic Archdiocese of Modena-Nonantola Tags: Clerical Administrative Region, Diocese.The Archdiocese of Modena-Nonantola (Latin: Archidioecesis Mutinensis-Nonantulana) is a Roman Catholic ecclesiastical territory in Italy. It existed as the Diocese of Modena in central Italy from the 3rd century CE. thumbnail area (km2) 2.089e+09 country Italy Established 3rd century Learn more... Loading...