

Introduction
Pope Pius VIII (20 November 1761 – 30 November 1830), born Francesco Saverio Castiglioni, reigned as Pope from 31 March 1829 to his death in 1830.
Pius VIII's pontificate was the shortest of all the popes of the 19th century, and is likely the least remembered. His brief papacy witnessed the Catholic Emancipation in Great Britain in 1829, which he welcomed, and the July Revolution in France in 1830, which he reluctantly accepted. Pius VIII is often remembered for his writings on marriages between Catholics and Protestants in the 1830 encyclical Litteris altero abhinc, in which he declared that a marriage could only be properly blessed if proper provisions had been made to ensure the bringing up of children in the Catholic faith. His death less than two years after his election to the papacy has led to speculation of a possible murder.
Biography
Early life
Francesco Saverio Castiglioni was born in Cingoli, Marche, the third of eight children of Count Ottavio Castiglioni and his wife Sanzia Ghislieri. His baptismal name was recorded as Francesco Saverio Maria Felice. He studied at the Collegio Campana run by the Society of Jesus and, after that, at the University of Bologna where he earned a doctorate in canon law and in civil law in 1785. He was ordained to the priesthood on December 17, 1785.
He served as the Vicar General of Anagni (1788–90), Fano (1790-97) and Ascoli Piceno (1797-1800). In 1800, Castiglioni was appointed as the Bishop of Montalto.
Episcopate and cardinalate
Castiglione received episcopal consecration in 1800 in Rome and commenced his work in his new diocese. After he refused to swear allegiance to Napoleon I of France (1804–14, 1815) he was taken to a series of Italian cities before being sent to France. After Napoleon fell, he returned to his diocese in 1814. He was praised by Pope Pius VII who in 1816 elevated him to the cardinalate as the Cardinal-Priest of Santa Maria in Traspontina. He held various high offices thereafter, including that of Major Penitentiary. He soon became a Cardinal-Bishop of the suburbicarian see of Frascati.
Castiglioni was considered a front-runner in the conclave of 1823. He was known to be close to Pius VII, who often referred to Castiglioni as "Pius VIII." However, he failed to gain the necessary votes, in part due to controversy surrounding an alliance between him and another favorite, Secretary of State Ercole Consalvi. Cardinal Annibale della Genga was elected instead, and he took the name of Pope Leo XII. The following statement has been given concerning Castiglione, or Pope Pius VIII:
"As a Cardinal, Castiglione had continued to live modestly, made no enemies, and although his own private life had always been irreproachable, he had shown no signs of censoriousness where others were concerned. He suffered from a very painful and distressing complaint, having perpetually suppurating sores on his neck and body, and [later as pope] was far too ill and feeble to do more than sign the documents presented to him by [Cardinal] Albani, who ruled the Papal States as autocratically as though he had himself worn the triple crown."
Papacy
Election
After the death of Pope Leo XII in 1829, Castiglioni was again considered to be a major candidate, though was questioned due to his frail health. Despite these concerns, he was elected as pope in the papal conclave of 1829. Given that Pope Pius VII had referred to him as Pius VIII, it seemed only suitable that it was the pontifical name that he chose. His coronation took place on April 5, 1829.
Modernism and Biblical translations
As Pope Pius VIII, he initiated some reforms in the states of the Church. On 24 May 1829 he issued an encyclical, Traditi humilitati. Perhaps indicating that the current debate on religious pluralism was also occurring in his own time he condemned the "foul contrivance of the sophists of this age" that would place Catholicism on par with any other religion.
Regarding Bible translations, he wrote in that encyclical:
On 25 March 1830, in the brief encyclical Litteris altero, he condemned the masonic secret societies and modernist biblical translations.
Other activities
His brief pontificate saw the Catholic Emancipation in the United Kingdom and the July Revolution in France, which occurred in 1829 and 1830, respectively. Pius VIII recognised Louis Philippe (1830–48) as French king and allowed him to use the French king's customary title "Roi Très Chretien," which means "His Most Christian Majesty."
Pius VIII accepted the situation on mixed marriages between Protestants and Catholics in Germany, but he opposed changes in Ireland and Poland, which were still strongly Catholic. In Litteris altero abhinc, he declared that a mixed marriage could only be blessed by a priest if proper promises had been made to educate the children of the marriage as Catholics.
Pius VIII also held three consistories in which he elevated a total of six men into the cardinalate. He held these ceremonies on July 27, 1829, March 15, 1830, and July 5, 1830.
He canonized no saints during his brief pontificate but he beatified two individuals.
- 23 December 1829: Benincasa da Montepulciano
- 4 March 1830: Chiara Gambacorti
In 1830 he proclaimed Saint Bernard of Clairvaux a Doctor of the Church.
Of remarkable importance to the future is a letter of his to a French bishop, where he allowed the taking of moderate interest (under the principle of foregoing a profit by investing the lended capital; see Vix pervenit for the discussion of the topic).
Being, at that time, head of the Roman State, he remained popular for decades for removing the so-called cancelletti (grids) from the taverns, which Leo XII had ordered to be put there to hinder the consumption of wine unless accompanied by a meal. More than a century later, Reinhard Raffalt would still know about a poem that ran thus: "Allor che il sommo Pio / comparve innanzi a Dio / gli domandò: Che hai fatto? / Rispose: Nient'ho fatto. / Corresser gli angeletti: / Levò i cancelletti." (Which is approximately in English: At the time when the highest Pius / approached God in the highest / He asked him: What have you got done? / He answered: "There's nothing I've got done." / But the angels present knew better: / "He cancelled the cancelletter".)
Health and death
Pius VIII was in very poor health during most of his papacy. He died on November 30, 1830 at the age of 69 in the Quirinal Palace in Rome.
Certain theories have emerged suggesting that Pius VIII was poisoned, but no proof has been found to verify this claim. Cardinal Camillo di Pietro gave the funeral ovation for the late pope, before the cardinals entered the conclave to choose a successor. The late pope was succeeded by Pope Gregory XVI.