Mondelli was born in Rome in 1755. He was named Bishop of Terracina, Priverno and Sezza in 1805. He was transferred to the diocese of Città di Castello on 26 September 1814. He died on 2 March 1825. Notizie per lànno 1808 (in Italian). Rome: nella Stamperia Cracas. 1808. p. 177. Ritzler-Sefrin, Hierarchia catholica VII, pp. 152, 362.
Muzi had been titular Bishop of Philippi (Ottoman Empire) and Apostolic Delegate to Chile (1823–1825). He was appointed Bishop of Città di Castello by Pope Leo XII on 19 December 1825. He died on 30 November 1849. Ritzler-Sefrin, Hierarchia catholica VII, pp. 152, 306. Gianni Maritati; Raffaele Iaria (2008). Apostolo della misericordia. La vita di Giovanni Muzi (in Italian). Rome: Città Nuova. p. 43. ISBN978-88-311-5521-2.
Born in Apiro (Camerino) in 1789, Turchi had previously been Bishop of Norcia (1843–1850). He was appointed Bishop of Città di Castello by Pope Pius I on 20 May 1850. He died on 8 November 1861. Notizie per l'anno bissestile 1858 (in Italian). Roma: Chracas. 1858. p. 112. Ritzler-Sefrin, Hierarchia catholica VIII, pp. 206.
Born at Valletta, Malta, in 1818, Micaleff was appointed Bishop of Città di Castello by Pope Pius IX on 21 December 1863. He was transferred to the diocese of Pisa on 27 October 1871. He died on 8 March 1883. Annuario pontificio (in Italian). Rome: Tipografia Reverenda Camera Apostolica. 1869. p. 144. Ritzler-Sefrin, Hierarchia catholica VIII, pp. 206, 455.
Sanchini was appointed Bishop of Città di Castello on 12 July 1909 by Pope Pius X, but he declined the election. He was not consecrated a bishop until 14 October 1916. The Catholic Encyclopedia: Supplement 1 (c1922). New York: Encyclopedia Press. 1922. p. 302.
Mangherini-Graziani II, p. 59. Salvador Miranda, The Cardinals of the Holy Roman Church, "Guido di Castello"; retrieved: 30 October 2018.[self-published source]