Agostino Trivulzio was an Italian Cardinal

Cardinal (Catholicism)

A cardinal is a senior ecclesiastical official, usually an ordained bishop, and ecclesiastical prince of the Catholic Church. They are collectively known as the College of Cardinals, which as a body elects a new pope. The duties of the cardinals include attending the meetings of the College and...

 and papal legate

Papal legate

A papal legate – from the Latin, authentic Roman title Legatus – is a personal representative of the pope to foreign nations, or to some part of the Catholic Church. He is empowered on matters of Catholic Faith and for the settlement of ecclesiastical matters....

. He was from a noble family 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 ,...

.

After the 1527 sack of Rome

Sack of Rome (1527)

The Sack of Rome on 6 May 1527 was a military event carried out by the mutinous troops of Charles V, Holy Roman Emperor in Rome, then part of the Papal States...

, he was taken hostage by the Imperial forces. He was subsequently a major pro-French figure in papal diplomacy.

He was created Cardinal in 1517. He was archbishop of Reggio Calabria in 1520, bishop of Alessano in 1521, bishop of Bobbio in 1522, bishop of Toulon in 1524, bishop of Le Puy in 1525, bishop of Avranches in 1526, bishop of Asti in 1528, bishop of Bayeux in 1531, bishop of Brugnato in 1539, and bishop of Périgueux in 1541.