the international network of neo-Latin poets gathered around Alexander VII. He warmly endorsed the activities of the Accademia del Cimento and took part to them. Leopoldo de' Medici entrusted him with the stylistic revision of the academy's sole publication, the Saggi di naturali esperienze. On 3 February 1665 he entered the Accademia della Crusca, an association of scholars and writers devoted to the Italian language. The cardinal was a loyal protector of Gian Lorenzo Bernini's interests in Rome and with the French court, as well as mentor to his oldest son, Pietro Filippo. A late portrait of Pallavicino in red chalk on buff paper by Bernini is in the Yale University Art Gallery. Owing to ill health Pallavicino could not participate in the conclave of 1667, which elected Pope Clement IX; he died in his room in the Jesuit house of Sant'Andrea al Quirinale on 5 June 1667, at the age of 59. His pupil Sylvester Maurus assisted him on his deathbed. According to the provisions of his last will and testament, Pallavicino was buried in the church of Sant'Andrea al Quirinale. He was entombed under a magnificent slab designed by baroque architect Mattia de Rossi. History of the Council of Trent Pallavicino is chiefly known by his History of the Council of Trent, a harsh if well researched rebuttal to Paolo Sarpi's Istoria del Concilio Tridentino. The work was published at Rome in two folio volumes in 1656 and 1657 (2nd ed., considerably modified, in 1666). Several potential candidates had been taken under consideration for the onerous task of correcting and superseding the very damaging work of Sarpi. According to an unpublished account by the custodian of the papal archives Felice Contelori (1588–1652), these were Girolamo Aleandro, secretary to Cardinal Francesco Barberini, the historian Agostino Mascardi, the ex-Jesuit Francesco Herrera, Giovanni Ciampoli and Felice Contelori himself. The jesuit Terenzio Alciati had been eventually chosen for the task by Pope Urban VIII. In early 1652, a few months after Alciati’s death, Pallavicino took over Alciati’s task. Alciati had access to the original acts of the Council of Trent deposited in the Archives of Castello, Archivum Arcis (Castel Sant'Angelo). Together Felice Contelori, Alciati collected and catalogued a huge amount of unpublished sources. Pallavicino draws on not only the sources collected over decades by P. Alciati, but also directly on the Latin manuscript of Alciati's unfinished and unpublished history Pseudo historia Concilii