Cardinal Ludovico Ludovisi dismissing Barberini's chances as long as Barberini remained a close ally of Cardinal Scipione Borghese, whose faction Barberini supported. Ludovisi had discussions with Cardinals Farnese, Medici and Aldobrandini on 30 July about seeing to Barberini's election. The three supported his candidacy and went about securing the support of others, which led to Barberini's election just over a week later. On 6 August 1623, at the papal conclave following the death of Pope Gregory XV, Barberini was chosen as Gregory XV's successor and took the name Urban VIII. His coronation had to be postponed until 29 September 1623 since the new pontiff was ill at the time of his election. Upon Pope Urban VIII's election, Zeno, the Venetian envoy, wrote the following description of him: Activities Urban VIII's papacy covered 21 years of the Thirty Years' War, (1618-1648) and was an eventful one, even by the standards of the day. He canonized Elizabeth of Portugal, Andrew Corsini and Conrad of Piacenza, and issued the papal bulls of canonization for Ignatius of Loyola (founder of the Society of Jesus, "Jesuits") and Francis Xavier (also a Jesuit), who had been canonized by his predecessor, Pope Gregory XV. Despite an early friendship and encouragement for his teachings, Urban VIII was responsible for summoning the scientist and astronomer Galileo to Rome in 1633 to recant his work. Urban VIII was opposed to Copernican heliocentrism and he ordered Galileo's second trial after the publication of Dialogue Concerning the Two Chief World Systems, in which Urban's point of view is argued by the character "Simplicio". Urban VIII practiced nepotism on a grand scale; various members of his family were enormously enriched by him, so that it seemed to contemporaries as if he were establishing a Barberini dynasty. He elevated his brother Antonio Marcello Barberini (Antonio the Elder) and then his nephews Francesco Barberini and Antonio Barberini (Antonio the Younger) to Cardinal. He also bestowed upon their brother, Taddeo Barberini, the titles Prince of Palestrina, Gonfalonier of the Church, Prefect of Rome and Commander of Sant'Angelo. Historian Leopold von Ranke estimated that during his reign, Urban VIII's immediate family amassed 105 million scudi in personal wealth. Urban VIII was a skilled writer of Latin verse, and a collection of Scriptural paraphrases as well as original hymns of his composition have been frequently reprinted. The 1638 papal bull Commissum Nobis protected the existence of Jesuit missions