Life

Pozzobonelli was born in Milan

Milan

Milan is the second-largest city in Italy and the capital city of the region of Lombardy and of the province of Milan. The city proper has a population of about 1.3 million, while its urban area, roughly coinciding with its administrative province and the bordering Province of Monza and Brianza ,...

, which at the time was part of Duchy of Milan

Duchy of Milan

The Duchy of Milan , was created on the 1st of may 1395, when Gian Galeazzo Visconti, Lord of Milan, purchased a diploma for 100,000 Florins from King Wenceslaus. It was this diploma that installed, Gian Galeazzo as Duke of Milan and Count of Pavia...

 and under Spanish rule. Pozzobonelli was the son of a noble family, and lost his mother during childhood. He was educated by the Jesuits and he received his degree in law at Pavia university

University of Pavia

The University of Pavia is a university located in Pavia, Lombardy, Italy. It was founded in 1361 and is organized in 9 Faculties.-History:...

. In 1730 he was ordained priest for the Archdiocese of Milan and he joined the teaching staff of the seminary

Seminary

A seminary, theological college, or divinity school is an institution of secondary or post-secondary education for educating students in theology, generally to prepare them for ordination as clergy or for other ministry...

 of his archdiocese. In 1734 he was named prefect (director) of Biblioteca Ambrosiana

Biblioteca Ambrosiana

The Biblioteca Ambrosiana is a historic library in Milan, Italy, also housing the Pinacoteca Ambrosiana, the Ambrosian art gallery. Named after Ambrose, the patron saint of Milan, it was founded by Cardinal Federico Borromeo , whose agents scoured Western Europe and even Greece and Syria for books...

 then he was named vicar of the archbishop for the city of Milan. At he death of Archbishop Carlo Stampa on 23 December 1742 he was named vicar capitular

Vicar capitular

A diocesan administrator is a provisional ordinary of a Roman Catholic particular church. The college of consultors elects an administrator within eight days after the see is known to be vacant. The college must elect as administrator a priest or bishop at least 35 years old...

 of the Archdiocese. In July 1743, Pope Benedict XIV named him archbishop of Milan, and in the summer of 1743 he was consecrated archbishop and created cardinal. One year later after that he had received the placet from the Austrian emperor he took possession of the archdiocese of Milan.During his tenure as archbishop he kept good relations with the Austrian authorities

Habsburg Monarchy

The Habsburg Monarchy covered the territories ruled by the junior Austrian branch of the House of Habsburg , and then by the successor House of Habsburg-Lorraine , between 1526 and 1867/1918. The Imperial capital was Vienna, except from 1583 to 1611, when it was moved to Prague...

 and he give his support to the former Jesuits after the Jesuit suppression. In the late years of his episcopacy he resigned from his post due to poor healths but Pope Clement XIII refused to free him from his duties as archbishop of Milan.
He died on 27 April 1783.

Conclaves

Pozzombelli participated in the Conclave of 1758

Papal conclave, 1758

The Papal conclave, May 15 – July 6, 1758, convoked after the death of Pope Benedict XIV, was the conclave that elected Cardinal Carlo Rezzonico of Venice, who under the name of Clement XIII became 248th pope of the Catholic Church.-List of participants:...

 and in the Papal conclave, 1769

Papal conclave, 1769

A papal conclave which lasted from 15 February to 19 May 1769 was convoked after the death of Pope Clement XIII. It elected as his successor Cardinal Lorenzo Ganganelli, who took the name Clement XIV.- Death of Clement XIII :...

 where was believed to be a papabile

Papabile

Papabile is an unofficial Italian term first coined by Vaticanologists and now used internationally in many languages to describe a cardinal of whom it is thought likely or possible that he will be elected pope. A literal English translation would be "popeable" or "one who might become pope".In...

, he didn't participated in the following conclave

Papal conclave, 1774–1775

The Papal conclave, October 5, 1774 – February 15, 1775 – was the papal conclave convoked after the death of Pope Clement XIV and ended with the election of Cardinal Giovanni Angelo Braschi, who took the name of Pius VI.-Death of Clement XIV:...

 for health resons.