Camillo Astalli 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...

, elevated on 19 September 1650 by Pope Innocent X

Pope Innocent X

Pope Innocent X , born Giovanni Battista Pamphilj , was Pope from 1644 to 1655. Born in Rome of a family from Gubbio in Umbria who had come to Rome during the pontificate of Pope Innocent IX, he graduated from the Collegio Romano and followed a conventional cursus honorum, following his uncle...

, who simultaneously adopted him into the Pamphili

Pamphili

The Pamphili are one of the papal families deeply entrenched in Roman Catholic Church, Roman and Italian politics of the 16th and 17th centuries ....

 family (as Camillo Astalli-Pamphili) and appointed him Cardinal-Nephew

Cardinal-nephew

A cardinal-nephew is a cardinal elevated by a Pope who is that cardinal's uncle, or, more generally, his relative. The practice of creating cardinal-nephews originated in the Middle Ages, and reached its apex during the 16th and 17th centuries. The word nepotism originally referred specifically to...

. He was a cousin, and rival for papal court power, of Olimpia Maidalchini

Olimpia Maidalchini

Olimpia Maidalchini , also spelled Olympia and known as Donna Olimpia, was the sister-in-law of Pope Innocent X .- Early life :...

.

He served as governor of Fermo and pontifical legate for the district of Avignon (1650–1653).

In February 1654 he fell into disgrace for revealing the secrets of state to Spain (likely the plans to invade Naples). The Pope deprived him of the title of Cardinal-Nephew and forbade him using the family name and arms of Pamphili. When Innocent X died, Astalli participated in the papal conclave of 1655

Papal conclave, 1655

The Papal conclave of 1655 was the papal conclave of Cardinals called on the death of Pope Innocent X. The conclave elected Fabio Chigi, who took office as Alexander VII.- History :...

 which elected Pope Alexander VII

Pope Alexander VII

Pope Alexander VII , born Fabio Chigi, was Pope from 7 April 1655, until his death.- Early life :Born in Siena, a member of the illustrious banking family of Chigi and a great-nephew of Pope Paul V , he was privately tutored and eventually received doctorates of philosophy, law, and theology from...

. Then he was appointed cardinal-protector of the Kingdom of Naples.

On 24 January 1661 the cardinals elected him to the post of Camerlengo of the Sacred College of Cardinals

Camerlengo of the Sacred College of Cardinals

The Camerlengo of the Sacred College of Cardinals was the treasurer of that body.He administered all property, fees, funds and revenue belonging to the College of Cardinals, celebrated the requiem Mass for a deceased cardinal and was charged with the registry of the Acta Consistoralia.It is...

for the annual term (until January 16, 1662). In July 1661 he was consecrated archbishop of Catania. He died at Catania.