Diocese of Ampurias

The Roman Catholic Diocese of Ampurias was a Latin suffragan Catholic bishopric in the north of Sardinia (Italy, Tyrrhenian Sea) from 1070 till its suppression and merger with the Diocese of Civita-Tempio (which kept the cathedral see) into the present Roman Catholic Diocese of Tempio-Ampurias.

The bishopric of Ampurias, also known as diocese of Flumen ('the stream' in latin), was founded circa 1170, like the Diocese of Gallura (later renamed Civita), plausibly when Pope Alexander II reorganized the ecclesiastical jurisdictions of Sardinia, which was being temporally divided into four autonomous giudicati ('judgedoms'), corresponding to the administrative curatorial of Anglona in the Giudicato of Torres, as suffragan of the Metropolitan Archdiocese of Torres.

Its original episcopal see, Amurias, was an Ancient port town, presumably at the coast of Codaruìna near Valledoria by the bay of Coghinas. Its original cathedral was dedicatated to the Apostle Peter, (now?) called San Pietro Mare ('Saint Peter by the Sea').

The first historically recorded Bishop of Ampurias, Bono, had a part around 1100 in the foundation of the monastery of San Nicolò di Solio, one of many founded in the diocese by the Cassinese Benedictine Congregation in the XIth and XIIth centuries, thirteen of which depended on Santa Maria di Tergu; whether their possessions ware exempt from the episcopal authority remained a matter of continuous dispute, giving to several papal interventions in favor of the Benedictines, possibly culminating in the murder of the abbot of Santa Maria di Tergu shortly before 1203.

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