Roman Catholic Cardinal. Roman born Camillo Di Pietro came from a notably rich family. His father's side were countryside merchants who entered the patriarchate of Terni and Spoleto, while his mother's were the dukes of Sermoneta, eminent members of the Roman aristocracy, descendants of Pope Boniface VIII. The second of four children, he was the nephew of Cardinal Michele Di Pietro, who was elevated to the Sacred College of Cardinals in 1801. Receiving his education at the Collegio Romano, where he studied humanities and philosophy, at the Seminario Romano, where he underwent studies in theology and at the Collegio di Protonotari Apostolici of Rome, from where he obtained a doctorate in utroque iuris in both civil and canon laws on May 10, 1829, having entered the Roman prelature as domestic prelate and referendary of His Holiness on January 15, 1829 after being named relator of the Sacred Consulta on December 15 of the previous year, he served as prelate adjunct of the Sacred Congregation of the Tridentine Council from January 15, 1829 until 1832. Named protonotary apostolic 'non participantium' on December 13, 1830, he pronounced before the Cardinals gathered for the conclave, the funeral oration for Pope Pius VIII. Apostolic delegate in Orvieto and Spoleto between January 20, 1834 and 1835, Pope Gregory XVI recalled him to Rome and named him auditor of the Sacred Roman Rota on April 6, 1835. Confirmed in his post by a motu proprio issued on April 27, 1835, he entered the office on the following November 23, eventually resigning it when he was ordained priest on June 16, 1839. Elected archbishop of the titular see of Berut the following month, he received his episcopal consecration on July 14 in the church of Ss. Domenico e Sisto of Rome, from Cardinal Chiarissimo Falconieri-Mellini, Archbishop of Ravenna. Appointed apostolic nuncio in the Kingdom of the Naples and the Two Sicilies on July 30 and named assistant at the Pontifical Throne on February 12, 1841, he was furthermore assigned as internuncio extraordinary and apostolic delegate in Portugal on June 29, 1844, apostolic nuncio in Portugal on September 24, 1847, and pro-nuncio in 1856. Pope Pius IX created him cardinal in the consistory of December 19, 1853, retaining his name 'in pectore', being ultimately published in the consistory of June 16, 1856, with Di Pietro receiving the title of San Giovanni a Porta Latina on April 15, 1859. Named president of the Supreme Council of Public Affairs on August 10, 1859, he served as protector of the Theological Academy of the University of Rome and prefect of the Supreme Tribunal of the Signature of Justice between August 29, 1863 and 1867. Appointed Camerlengo of the Sacred College of Cardinals on January 8, 1866, he opted for the order of cardinal bishops and the suburbicarian see of Albano on September 20, 1867. Named president of the Census Office on December 20, 1867, he opted for the suburbicarian see of Porto e Santa Rufina on March 12, 1877. Vice-dean of the Sacred College of Cardinals, Di Pietro played an essential role in the latter's organization, obtaining the necessary guarantees from the Italian Government, becoming thus the first conclave celebrated after the Holy See had lost the Papal States. Camerlengo of the Holy Roman Church from March 28, 1878 until his death, he opted for the suburbicarian see of Ostia e Velletri on July 15, 1878, proper of the Dean of the Sacred College of Cardinals. Passing away in his native city, his body was exposed in the church of Santa Maria dei Monti and later buried inside the local Campo Verano Cemetery.