In 1322, Bishop Sinibaldus of Guardia was elected bishop of Troia, but while the matter was being considered at the papal court in Avignon, Bishop Sinibaldus died. Cappelletti XIX, p. 359. G. Mollat, Jean XXII. Lettres communes Vol. 4 (Paris: Fontemoing 1906), p. 197, no. 16486 (20 October 1322). Eubel I, p. 269 with note 1; 499, note 10.
Bishop Petrus participated in the consecration of the new basilica at Montecassino by Pope Alexander II on 1 October 1071. He was present at the Third Provincial Council of Benevento on 1 April 1075. Synodicon S. Beneventanensis ecclesiae continens concilia 19... cura, labore... fr. Vincentii Mariae... cardinalis Vrsini archiepiscopi, (in Latin), (Benevento: ex typographia Archiepiscopali, 1695), p. 22. Pius Bonifacius Gams, Series Episcoporum Ecclesiae Catholicae (1873), p. 884. Kehr IX, p. 191.
The right to elect a bishop of Guardia had been reserved to the pope. Joannes was appointed on 14 July 1348, by Pope Clement VI, and consecrated at Avignon by Cardinal Bertrand de Poietto (Pouget), Bishop of Ostia. Bishop Joannes was transferred to the diocese of Gubbio on 19 November 1350, by Pope Clement VI. On 27 March 1370, he was transferred to the diocese of Riez by Pope Urban V. He died in 1396. Eubel I, pp. 242, 269, 417. Joseph Hyacinthe Albanés; Ulysse Chevalier (1899). Gallia christiana novissima: Aix, Apt, Fréjus, Gap, Riez et Sisteron (in Latin). Montbéliard: Société anonyme d'imprimerie montbéliardaise. pp. 610–612, Instrumenta, p. 401.
On the death of Bishop Antonius, Savinus was appointed by Clement VII at the same time as Pope Urban VI (sic!) appointed Thomas, though Savinus did not have possession of the diocese. On the death of Bishop Thomas in 1419, Pope Martin V reappointed (de novo providemus teque illi praeficimus) Savinus as bishop of Guardalfiera in a bull of 8 March 1419. C. Eubel (ed.), Bullarium Franciscanum Vol. VII (Romae: Typis Vaticanis 1904), p. 518, no. 1408.
Gerardi was appointed bishop of Guardialfiera by Pope Alexander VI in the consistory of 22 August 1494. Antonio Libanori, Ferrara d'oro, Parte prima (Ferrara: per Alfonso, e Gio. Battista Maresti 1665), p. 67-68. Eubel II, p. 162.
Opizino Galli was a familiar of Cardinal Lorenzo Cybo, nephew of Pope Clement VIII, and served as his Vicar General of Benevento for thirty-six years. He was appointed bishop of Guardialfiera on 11 January 1503, by Pope Alexander VI. He consecrated the church of S. Francesco (Pontremoli) on 20 November 1503. Eubel II, p. 162 with note 3; III, p. 206 with note 2. Camillo Cimati, Alcune notizie sul pontremolese Opicino Galli vescovo di Guardialfiera dalla fine del 1400 ai primi del 1500 (Roma: Capaccini 1900). Pietro Bologna, "I vescovi appartenente a famiglie di Pontremoli,"(in Italian), in: Atti e memorie della R. Deputazione di storia patria per le provincie modenesi series 5, Vol. III (Modena 1904), pp. 42-49.
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Kehr IX, pp. 191 and 67, no. 63: "...episcopatus videlicet: Avellinum, Montem Maranum, Frequentinum, Arianum, Montem de Vico, Bivinum, Aseulum, Luceriam, Florentinuna, Tortibulum, Montem Corvinum, Vulturariam, Civitatem, Draconariam, Larinum, Termulam, Guardiam, Triventum, Boianum, Alifiam, Thelesiam et Sanctam Agatham...." Hans-Walter Klewitz (1933), Zur geschichte der bistums organization Campaniens und Apuliens im 10. und 11. Jahrhundert, (in German), in: Quellen und Forschungen aus italienischen Archiven und Bibliotheken, XXIV (1932-33), pp. 13-14.
