Francesco Barberini (seniore) in the context of "Poussin"

Nicolas Poussin (UK: /ˈpuːsæ̃/, US: /puːˈsæ̃/, French: [nikɔla pusɛ̃]; June 1594 – 19 November 1665) was a leading painter of the classical French Baroque style, although he spent most of his working life in Rome. Most of his works were on religious and mythological subjects painted for a small group of Italian and French collectors. He returned to Paris for a brief period to serve as First Painter to the King under Louis XIII and Cardinal Richelieu, but soon returned to Rome and resumed his more traditional themes. In his later years he gave growing prominence to the landscape in his paintings. His work is characterized by clarity, logic, and order, and favors line over color. Until the 20th century he remained a major inspiration for such classically-oriented artists as Jacques-Louis David, Jean-Auguste-Dominique Ingres and Paul Cézanne.

Details of Poussin's artistic training are somewhat obscure. Around 1612 he traveled to Paris, where he studied under minor masters and completed his earliest surviving works. His enthusiasm for the Italian works he saw in the royal collections in Paris motivated him to travel to Rome in 1624, where he studied the works of Renaissance and Baroque painters—especially Raphael, who had a powerful influence on his style. He befriended a number of artists who shared his classicizing tendencies, and met important patrons, such as Cardinal Francesco Barberini and the antiquarian Cassiano dal Pozzo. The commissions Poussin received for modestly scaled paintings of religious, mythological, and historical subjects allowed him to develop his individual style in works such as The Death of Germanicus, The Massacre of the Innocents, and the first of his two series of the Seven Sacraments.

Cassiano dal Pozzo (1588 – 22 October 1657) was an Italian scholar and patron of arts. The secretary of Cardinal Francesco Barberini, he was an antiquary in the classicizing circle of Rome, and a long-term friend and patron of Nicolas Poussin, whom he supported from his earliest arrival in Rome: Poussin in a letter declared that he was "a disciple of the house and the museum of cavaliere dal Pozzo." A doctor with interests in the proto-science of alchemy, a correspondent of major figures like Galileo, a collector of books and master drawings, dal Pozzo was a node in the network of European scientific figures.

The Libellus de Medicinalibus Indorum Herbis (Latin for "Little Book of the Medicinal Herbs of the Indians") is an Aztec herbal manuscript, describing the medicinal properties of 250 plants used by the Aztecs. It was translated into Latin by Juan Badiano, from a Nahuatl original composed in the Colegio de Santa Cruz de Tlatelolco in 1552 by Martín de la Cruz that is no longer existant. The Libellus is also known as the Badianus Manuscript, after the translator; the Codex de la Cruz-Badiano, after both the original author and translator; and the Codex Barberini, after Cardinal Francesco Barberini, who had possession of the manuscript in the early 17th century.

The Badianus Manuscript of 1552 is the first illustrated and descriptive scientific text of Nahua medicine and botany produced in the Americas. It is a significant text in the history of botany and the history of medicine.