Birth. June 17, 1713, Milan. Son of Annibale Visconti, official in the imperial army. His godfather was Prince Eugenio of Savoy.

Education. University of Pavia, Pavia (doctorate in utroque iure, both canon and civil law, December 19, 1737).

Early life. Practiced law in Milan, 1737-1740. Relator of the S.C. of the Sacred Consulta, 1748. Secretary of the S.C. of Indulgences and Sacred Relics. Administrator of the hospital S. Gallo, Rome, and primicerius of the Archconfraternity degli Pellegrini, and of Carmine. Referendary of the Supreme Tribunals of the Apostolic Signature of Justice and of Grace.

Priesthood. Ordained, December 22, 1759.

Episcopate. Elected titular archbishop of Efeso, January 28, 1760. Consecrated, February 16, 1760, Rome, by Pope Clement XIII. Assistant at the Pontifical Throne, February 20, 1760. Nuncio in Poland, February 22, 1760. Nuncio in Austria, November 22, 1766.

Cardinalate. Created cardinal and reserved in pectore in the consistory of June 17, 1771; published in the consistory of April 19, 1773. Participated in the conclave of 1774-1775, which elected Pope Pius VI. Received the red hat and the title of S. Croce in Gerusalemme, April 3, 1775. Prefect of the Economy of the S.C. of Propaganda Fide. Camerlengo of the Sacred College of Cardinals, March 20, 1780. Prefect of the S.C. of Rites, 1781? Prefect of the S.C. of Indulgences and Sacred Relics, 1782.

Death. March 4, 1788, Rome. Exposed in the church of Ss. Ambrogio e Carlo, Rome, where the funeral took place, and buried in his title.

Bibliography. Ellemunter, Anton. Antonio Eugenio Visconti und die Anfänge des Josephinismus : eine Untersuchung über das theresianische Staatskirchentum unter besonderer Berücksichtigung der Nuntiaturberichte, 1767-1774. . Graz : H. Böhlaus Nachf., 1963; Squicciarini, Donato. Nunzi apostolici a Vienna. Città del Vaticano : Libreria Editrice Vaticana, 1998, p. 177-181.

Birth. July 14, 1721, Rome. His father was a Frenchman established in Rome.

Education. University of Siena, Siena (doctorate in utroque iure, both canon and civil law, September 11, 1738).

Early life. Referendary of the Supreme Tribunals of the Apostolic Signature of Justice and of Grace. Commissary apostolic in Nursia, diocese of Spoleto. Judge of the Reverend Fabric of St. Peter's. Lieutenent of the Apostolic Chamber. Voter of the Supreme Tribunal of the Apostolic Signature of Justice. Auditor of the causes of the Apostolic Palace, 1763.

Priesthood. Ordained, March 19, 1767.

Episcopate. Elected titular archbishop of Damasco April 6, 1767. Consecrated, April 26, 1767, in a chapel of the Apostolic Palace of the Quirinale, Rome, by Pope Clement XIII, assisted by Scipione Borghese, titular archbishop of Teodosia, and by Ignazio Reali, titular archbishop of Atena. Nuncio in France, April 28, 1767. Assistant at the Pontifical Throne, May 28, 1767. Transferred to the archbishopric of Ferrara, March 15, 1773.

Cardinalate. Created cardinal and reserved in pectore in the consistory of June 17, 1771; published in the consistory of April 19, 1773; received the red hat and the title of SS. Trinità al Monte Pincio, December 20, 1773. Participated in the conclave of 1774-1775, which elected Pope Pius VI. Resigned the government of the archbishopric, February 14, 1777. Pro-auditor of His Holiness. Camerlengo of the Sacred College of Cardinals, April 2, 1781.

Death. May 5, 1782, Rome. Exposed in the church of S. Maria in Vallicella, Rome, where the funeral took place, and buried in his family's tomb in that same church.