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The date of the establishment of the diocese of Ottana (Othana in Latin) is unknown, but it was in existence by the first decade of the 12th century.[4] It was a suffragan of the archbishop ofTorres (Sassari).
Bishop Antonio di Alcalà held a diocesan synod on 3 June 1475.[5]
Pope Julius II, in hispapal bull "Aequum Reputamus" of 8 December 1503, suppressed the diocese ofBisarcio, theDiocese of Castro, andDiocese of Ottana.[6] Their territories, and some from theArchdiocese of Sassari, were combined and reassigned to establish theDiocese of Alghero. Alghero was made a suffragan of Sassari. Ottana was no longer a cathedral city. The town was in a malarial zone, and it gradually lost nearly all of its population in thr 16th century.[7]
^All demographics and other statistics: Italian statistical instituteIstat.
^Kehr, p. 447. Cappelletti,p. 142: "Fuor di dubbio per altro era vescovo di Ottana, circa l'anno 1106, un Giovanni, il quale assisteva alla consecrazione della chiesa della santissima Trinità di Sacargia."
^Giovanni Spano,Memoria sopra l'antica cattedrale di Ottana e scoperte archeologiche fattesi nell'isola in tutto l'anno 1870,(in Italian), (Cagliari: Tipografia del Commercio 1870),pp. 6-7. G. Spano,Ortografia sarda nazionale, ossia Gramatica della lingua logudorese paragonata all'italiana Vol. 2 (Cagliari: Stamperia reale 1840),pp. 98-100 (partial text).
^DK Eyewitness Travel Guide. Sardinia (DK Travel 2017),p. 105. G. Dettori, "La malaria in relazione alla vita economico-sociale in Sardegna," in:Atti della Societa per gli studi della malaria(in Italian) (Roma 1912),p. 251.
^Franciscus had been a canon of the cathedral Chapter of Sorra, and had been elected, consecrated, and confirmed as bishop of Sorra. His election, however, was rejected byPope Clement VI, and instead he was appointed bishop of Ottana. Pintus,p. 109. Eubel,Hierarchia catholica I, p. 381 with note 2.
^Gerardo was appointed byPope Clement VII. on 21 November 1390. On 28 August 1402, he was appointed Bishop ofBethléem à Clamecy (Burgundy, France), byPope Benedict XIII. He died in 1403. Eubel I, pp. 135; 381 with note 3. Pintus,p. 109.
^Blasius was a canon of the cathedral Chapter of Torres (Sassari). He was appointed byPope Boniface IX on 14 June 1400. Biagio is documented as still functioning on 13 August 1422. Eubel I, p. 381. Pintus,p. 110.
^Giovanni de Salinis aureis (or Salmis aureis) was a master of theology. He had been the Vicar-general of the Minors Conventual throughout Sardinia.Pope Nicholas V (1447–1455) named him Inquisitor of Sardinia. On 31 May 1454, he was appointed bishop of Ottana.Pope Paul II appointed him Bishop ofBosa on 17 June 1471. He died in 1484. Pintus,p. 110. Eubel II, p. 208.
^Antonio held a diocesan synod on 3 June 1475. He was dead before 2 August 1475, when aSede Vacante is recorded in a document. P. Gams,Series episcoporum (Ratisbon 1873),p. 841, col. 2. Pintus,p. 111. Eubel's dates (Hierarchia catholica II, p. 208) are incorrect, as are those of Cappelletti,p. 144..
