Tommaso Rinuccini
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Tommaso Rinuccini (Rome 1 November 1596 - Florence 3 September 1682) was an Italian noble, diplomat and friend of Galileo Galilei.
Tommaso Rinuccini was the son of Florentine patricians Cammillo Rinuccini and Virginia Bandini, and the younger brother of Giovanni Battista Rinuccini, Archbishop of Fermo. He lived with his family in Rome until 1601, when they moved back to Florence. He later went to Bologna to continue his studies with the Accademia degli Ardenti. Problems with his eyesight eventually led him to return to Florence and devote himself to gymnastic and chivalrous exercises. His interest in science and letters remained undimmed however, and he became a pupil of Galileo, with whom he formed an enduring attachment.[1] At the age of 22 he joined the diplomatic service of the Grand Duchy of Tuscany; in 1618 he was in Venice, and in 1622, in Parma. In 1623 he was posted to Rome with Pier Antonio Guadagni, as part of an extraordinary mission following the accession of the Florentine Pope Urban VIII.[2]
The Assayer and correspondence with Galileo
There were a number of Florentines in Rome who were connected with Urban VIII or his nephew Cardinal Francesco Barberini - Rinuccini's brother Giovanni Battista became lieutenant to Cardinal Barberini.[3] Galileo was in frequent correspondence with a number of them, including Mario Guiducci, Francesco Stelluti and Benedetto Castelli, as well as both Rinuccini brothers.[4][5] The new Pope was friendly towards Galileo and many of his ideas, and his election seemed an excellent opportunity to take a more assertive line on astronomy than had been possible since the Roman Inquisition had proscribed heliocentrism in 1616.[6] It was important for Galileo to carefully judge the political mood in Rome before publishing anything controversial and Tommaso Rinuccini was an important informant on whom he relied.[7]
The same year as the Pope was elected, Galileo published The Assayer, the final round in his protracted polemical battle with Orazio Grassi over the origin of comets, which Galileo mistakenly believed were an optical illusion.[8] In a letter to Galileo on 20 October 1623, Tommaso Rinuccini wrote on behalf of Cardinal Barberini that Urban VIII had indicated he would appreciate a visit from Galileo.[9] He followed this up with another letter on 2 December 1623 reporting Orazio Grassi's reaction to the publication of The Assayer and his promise to respond to it quickly. He also reported that Urban VIII had read it and was very pleased with it.[10] On 10 August 1624 Rinuccini wrote that Grassi had visited Galileo's friend visit Mario Guiducci while he was sick.[11] It appears that behind a show of friendliness Grassi was gathering information to denounce Galileo to the Roman Inquisition.[12]