On 8 June 1070, Pope Alexander II, who was visiting Arezzo, confirmed the diocese's privileges and territory for Bishop Constantine. Constantine took part in the enthronement of Guibert of Ravenna as Antipope Clement III in June 1080. He was excommunicated for his rash action, and, according to Archbishop Gebehard of Salzburg, he was still under the ban in 1084. Philipp Jaffé (1869). Bibliotheca rerum germanicarum: Monumenta Bambergensis (in Latin). Berlin: apud Weidmannos. pp. 141–142. Ughelli I, pp. 416-417. Schwartz, p. 201-202. Kehr III, p. 151, no. 27.
Francesco Jacobi Bellarmino was the Archpriest of Montepulciano. He was appointed to the diocese of Arezzo by Pope John XXIII on 22 December 1413. He worked in the Curia as litterarum apostolicarum scriptor and Auditor. In 1419 he was sent to Naples by Pope Martin V to crown Queen Joanna of Naples. On 17 October 1424 he was serving as the pope's Referendary (judge), and was appointed taxator domorum et rerum curialium. Cappelletti notes that he was rarely in Arezzo. Pandolfo Collenuccio (1591). Compendio dell'istoria del regno di Napoli (in Italian). Vol. 1. Venice: Pelusio. p. 95. Cappelletti, p. 147. Eubel I, p. 104 with note 11. William J. Connell; Andrea Zorzi (2004). Florentine Tuscany: Structures and Practices of Power. Cambridge University Press. p. 135. ISBN978-0-521-54800-7.
Born in Livorno in 1762, Maggi held a doctorate in theology, and was Vicar General of the bishop of Pistoia. He was appointed Bishop of Arezzo on 9 April 1827 by Pope Leo XII. He died on 3 April 1839. Notizie per l'anno 1834 (Roma: Cracas 1834), p. 78. Christoph Weber (2010). Episcopus et Princeps (in German). Frankfurt am Main: Peter Lang. p. 36. ISBN978-3-631-60242-3. Ritzler-Sefrin, Hierarchia catholica VII, p. 88.
Ricci was a native of Florence, and held the degree of Doctor in utroque iure. He was a priest for less than six months, when he was appointed Bishop of Arezzo on 27 June 1611, by Pope Paul V. He died on 20 December 1611. Eubel III, p. 116. Gauchat, Hierarchia catholica IV, p. 93 with note 2. David M. Cheney, Catholic-Hierarchy.org, "Bishop Antonio Ricci"; Retrieved 7 September 2016.[self-published source]
diocesiarezzo.it
CV of Archbishop Fontana: Diocesi di Arezzo, "Arcivescovo: Biografia"; retrieved: 24 November 2019. (in Italian)