Complex sentence: The Archbishopric of Vienne, named after its episcopal seeVienne in the Isère département of southern France, is a major and ancient metropolitan archdiocese, which has even disputed the status of chief Primate in (former) Gaul.
Split into simpler sentences: The Archbishopric of Vienne is an Roman Catholic ecclesiastical territory in southernFrance, named after its episcopal see Vienne, in the Isère département of southern France. It is a major and ancient metropolitan archdiocese, which has even disputed the status of chief Primate in (former) Gaul.