Gian Giacomo Teodoro Trivulzio (Milan, 1597 – Milan, 3 August 1656) was an Italian Cardinal from Milan, who held several high functions in service of the Spanish Crown.
He was the son of Carlos Manuel Trivulzio, count of Melci, who died when Gian Giacomo was still very young, and Catherina Gonzaga. His sister was Ippolita Trivulzio.
In 1615 he married Giovanna Maria Grimaldi, daughter of Hercule, Lord of Monaco.
They had two daughters and one son :
When his wife died in 1620, Gian Giacomo entered the Church. In 1629, he became cardinal.
In 1642 he became Viceroy of Aragon, and Grandee of Spain.
He participated in the Papal conclave, 1644, which finally chose Pope Innocent X, and in the Papal conclave, 1655, which elected Pope Alexander VII, and where Gian Giacomo as protodeacon gave the Habemus Papam announcement.
Between 1647 and 1649 he was Viceroy of Sicily and between 1649 and 1651 Viceroy of Sardinia. In April 1656 he became interim Governor of the Duchy of Milan, a post he held until his death. He died in Milan on 3 August 1656 and was buried in the family vault in the Santo Stefano church.
| Government offices | ||
|---|---|---|
| Preceded by Enrique de Pimentel y Moscoso |
Viceroy of Aragon 1642–1644 |
Succeeded by Bernardino Fernández de Velasco, 6th Duke of Frías |
| Preceded by Vicente de Guzmán |
Viceroy of Sicily 1647–1649 |
Succeeded by John of Austria the Younger |
| Preceded by Bernardo Matías de Cervelló |
Viceroy of Sardinia 1649–1651 |
Succeeded by Duarte Álvarez de Toledo, Count of Oropesa |
| Preceded by Luis de Benavides Carrillo, Marquis of Caracena |
Governor of the Duchy of Milan April 1656 – August 1656 |
Succeeded by Alfonso Pérez de Vivero, Count of Fuensaldaña |
| Catholic Church titles | ||
| Preceded by Carlo Gaudenzio Madruzzo |
Cardinal-Deacon of San Cesareo in Palatio 1629–1644 |
Succeeded by Carlo Rossetti |
| Preceded by Girolamo Colonna |
Cardinal-Deacon of Sant'Eustachio 1652–1653 |
Succeeded by Virginio Orsini |