Start of the Inquisition against Jewish conversos Queen Isabella was convinced of the existence of
Crypto-Judaism among
Andalusian conversos during her stay in
Seville between 1477 and 1478. A report, produced by
Pedro González de Mendoza, Archbishop of Seville, and by the Dominican
Tomás de Torquemada, confessor to
Ferdinand and
Isabella, corroborated this assertion. The Catholic monarchs requested a
papal bull to establish an inquisition in Spain. In 1478
Pope Sixtus IV granted the bull
Exigit sincerae devotionis affectus, to deal with those who had been baptized, but "revert to the rites and customs of the Jews and to keep the dogmas and precepts of the Jewish superstition and perfidy.... Not only do they themselves persist in their own blindness, but also some who are born of them and some who associate with them are poisoned by their perfidy." To "expel this perfidy", "to convert the infidels to the proper faith", Historian Henry Charles Lea wrote that the Pope sought to treat heresy like as other crimes. Outraged, Ferdinand feigned doubt about the bull's veracity, arguing that no sensible pope would have published such a document. He wrote the pope on 13 May 1482, saying: "Take care therefore not to let the matter go further, and to revoke any concessions and entrust us with the care of this question." The Pope suspended the bull, then switched to full cooperation, by issuing a new bull on October 17, 1483, with which he appointed Torquemada Inquisitor General of Aragon, Catalonia and Valencia, thus uniting all Spanish activity under a single leader. Setting to work immediately, they burned the first converses at the stake in Aragon in 1484. Opposition continued in Aragon and Catalonia, which sought to maintain local control.
Pope Innocent VIII then resolved the issue by withdrawing all papal inquisitors from Aragon and Catalonia, thus relinquishing full control to Torquemada, specifying that all appeals be addressed by Torquemada. The Spanish Inquisition expanded to other territories under the Spanish Crown –
Southern Italy, including
Sicily and
Sardinia, and Central and South America, with tribunals in
Lima, Peru,
Mexico City and
Cartagena (present-day
Colombia).
Trials Tomás de Torquemada established Inquisition procedures in 1484, creating a 28-article code,
Compilación de las instrucciones del oficio de la Santa Inquisición, based on Nicholas Eymerich's
Directorium Inquisitorum. That code remained largely unchanged for over three centuries. The state deemed heresy to be treason, punishable by death. Courts announced a 30-day grace period for self-confessions and denunciations, requiring individuals to report themselves and others, including relatives and friends, for attending Jewish prayer meetings. Inquisitors collected accusations from neighbors. Signs of crypto-Judaism included no chimney smoke on Saturdays, buying many vegetables before
Passover, or purchasing meat from a converted butcher. Courts presumed the accused guilty, withholding accusers' identities. Trials aimed to extract confessions, often using water torture, the
rack, or suspending individuals by their wrists with weights tied to their feet, repeatedly raising and dropping them. Confessions occurred publicly at
autos-da-fé. Legal expert Francisco Peña stated in 1578 that trials and executions aimed to ensure public good and instill fear, requiring public sentencing "for education and to terrify". These ceremonies rivaled bullfights in popularity. In 1680, King Charles II marked his marriage with an
auto-da-fé in Madrid, drawing 50,000 spectators and sentencing 118 individuals, mostly Jewish conversos, to severe penalties, including execution by burning. Confessed individuals faced punishments like penance, public flogging, exile, or servitude as galley slaves, common in the 16th century. Others received prison sentences, from years to life, with near universal property confiscation, even for repentant heretics. Between 1536 and 1543, eight courts seized 87 million maravedis from victims. Estimates of expelled Jews vary. Early accounts by
Juan de Mariana speaks of 800,000 people, and
Don Isaac Abravanel claimed 300,000, while modern estimates, based on tax returns and population data, suggest 80,000 Jews and 200,000 conversos lived in Spain, with about 40,000 emigrating. Joseph Pérez estimates 50,000 to 100,000 expelled. Expelled Jews, known as
Sephardic Jews, from Castile mainly fled to Portugal, where forced conversion occurred in 1497, followed by expulsions under the
Portuguese Inquisition. Others, called
Megorashim ("expelled" in Hebrew), migrated to Morocco and North Africa. Jews from Aragon often went to Italy, not Muslim lands.
Sicily, under Spanish rule, with 25,000–37,000 Jews, also faced expulsions in 1492. After Spain annexed
Naples,
Apulia and
Calabria (1510–1535), Jews there were expelled. Many settled in the Ottoman Empire, particularly Thessaloniki, where expellees built synagogues named after Castile, Aragon, and Catalonia in 1492–1493, with three more added by 1502 for those expelled from Spanish-controlled Sicily, Apulia, and Calabria.
Expulsion of Muslim conversos The Inquisition targeted Moriscos, converts from Islam, for suspected secret practice of their former faith. A decree on 14 February 1502 forced Muslims in Granada to convert to Christianity or face expulsion. Valencia, with high ethnic tensions, suffered economic collapse and depopulation. Most expelled Moriscos settled in the
Maghreb or
Barbary Coast. Those avoiding expulsion or returning assimilated into the dominant culture. At the Inquisition's peak, Morisco cases comprised under 10% of trials. In 1621, Philip IV ordered a halt to harsh measures against Moriscos. In 1628, the Council of the Supreme Inquisition instructed Seville inquisitors to prosecute expelled Moriscos only for significant disturbances. The last major prosecution for crypto-Islamic practices occurred in Granada in 1727, with most receiving light sentences. By the late 18th century, indigenous Islamic practices had ceased in Spain.
Blood purity During the Spanish Inquisition,
limpieza de sangre (blood purity statutes) targeted Jewish and Muslim converts to Christianity, introducing race-based discrimination and antisemitism. Toledo enacted the first statute in 1449 after anti-converso riots and killings. That statute barred conversos or those with converted parents or grandparents from holding public or private office or testifying in court. In 1496,
Pope Alexander VI approved a purity statute for the
Hieronymites. By 1530, Inquisition tribunals required towns to maintain genealogy registers, labeling married men and their families as Old Christians or conversos, marking them as "pure" or "impure." Investigations and trials followed if individuals lacked proof of pure lineage or faced suspicion of lying. By the 16th century, these statutes systematically excluded conversos from Church and state roles, fostering fear, hostile witnesses, and perjury. A single Jewish ancestor could cost a family everything, laying the groundwork for race-based
antisemitism. These statutes hindered Spaniards emigrating to the Americas, as proof of no recent Muslim or Jewish ancestry was required for travel to the
Spanish Empire. In 1593, the
Jesuits adopted the
Decree de genere, barring those with any Jewish or Muslim ancestry, however distant, from joining the Society of Jesus, applying Spain's blood purity principle globally. Blood purity tests declined by the 18th century, but persisted into the 19th century in some areas. In Mallorca, no
Xueta (descendants of Mallorcan Jewish conversos) priests could perform Mass in a cathedral until the 1960s.
Christian heretics Protestantism , Anneken Hendriks, who was charged with heresy in
Amsterdam (1571) The Spanish Inquisition rarely targeted Protestants due to their limited presence. It labeled anyone offending the Church as "Lutheran." Early trials focused on the
Alumbrados, a mystical sect in
Guadalajara and
Valladolid, leading to long prison sentences but no executions. These cases prompted the Inquisition to pursue intellectuals and clerics influenced by
Erasmian ideas, diverging from orthodoxy. Charles I and
Philip II admired
Erasmus. From 1558 to 1562, under Philip II, the Inquisition prosecuted Protestant communities in
Valladolid and Seville, totaling about 120 people. That period saw heightened Inquisition activity, with several
autos de fe, some attended by royalty, resulting in about 100 executions. Kamen notes that from 1559 to 1566, Spain executed around 100 for heresy, compared to twice as many in England under
Mary Tudor, three times as many in France, and ten times as many in the
Low Countries. These mid-century autos de fe nearly eliminated Spanish Protestantism, a small movement initially. After 1562, repression lessened, though trials continued. In the late 16th century, about 200 Spaniards faced Protestantism accusations. Most were not actual Protestants; inquisitors or accusers marked irreligious acts, drunken mockery, or anticlerical comments as "Lutheran." Disrespecting church images or eating meat on forbidden days also indicated heresy. Roughly 12 Spaniards were burned for Protestantism during that time. The Inquisition often treated Protestantism as a sign of foreign influence or political disloyalty rather than a religious issue.
Orthodox Christianity Even though the Inquisition had theoretical permission to investigate Orthodox schismatics, it rarely did. No major war came between Spain and any Orthodox country, lacking reasons to do so. One casualty was tortured by "Jesuits" (though most likely
Franciscans) who administered the Spanish Inquisition in North America, according to authorities within the
Eastern Orthodox Church: St.
Peter the Aleut. Even that single report has various inaccuracies that make it problematic, and confirmation in the Inquisitorial archives.
Freemasonry The Roman Catholic Church has regarded
Freemasonry as heretical since about 1738; the
suspicion of Freemasonry was potentially a capital offence. Spanish Inquisition records reveal two prosecutions in Spain and only a few more throughout the Spanish Empire. In 1815,
Francisco Javier de Mier y Campillo, the
Inquisitor General of the Spanish Inquisition and the
Bishop of Almería, suppressed Freemasonry and denounced the lodges as "societies which lead to atheism, to sedition and to all errors and crimes." He then instituted a purge during which
Spaniards could be arrested on the charge of being "suspected of Freemasonry". The Catholic Church's
Index Librorum Prohibitorum banned thousands of books from 1560 to 1966. Some notable
Spanish literature works, mostly plays and religious texts, appeared in the Indexes. Several religious writers, now considered saints, had works listed. In early modern Spain, books required prepublication approval from secular and religious authorities, sometimes with modifications. Even approved texts faced later censorship, occasionally decades after publication. As Catholic theology evolved, some texts were removed from the Index. Initially, inclusion meant total prohibition, but this proved impractical and counterproductive for educating clergy. Inquisition officials began expurgating texts by blotting out specific words or passages, allowing these versions to circulate. Some historians argue that strict control was unenforceable, permitting more cultural freedom than commonly thought. Irving Leonard revealed that romances like
Amadis of Gaul reached the New World despite royal bans, with Inquisition approval. In the 18th century, the
Age of Enlightenment led to more licenses for possessing prohibited texts. The Inquisition's censorship did not halt the
Siglo de Oro, though many major authors, including
Bartolomé Torres Naharro,
Juan del Enzina,
Jorge de Montemayor,
Juan de Valdés,
Lope de Vega, the anonymous
Lazarillo de Tormes, and Hernando del Castillo's
Cancionero General, appeared on the Index.
La Celestina faced expurgation in 1632 and a full ban in 1790. Non-Spanish authors like
Ovid,
Dante,
Rabelais,
Ariosto,
Machiavelli,
Erasmus,
Jean Bodin,
Valentine Naibod, and
Tomás Moro were prohibited. A prominent case involved
Fray Luis de León, a converso humanist and religious writer, imprisoned from 1572 to 1576 for translating the
Song of Songs from Hebrew. The Inquisition stifled free and scientific thought. One exiled Spaniard lamented, "Our country is a land of pride and envy ... barbarism; one cannot produce culture without suspicion of heresy, error, and Judaism". While Europe embraced the Enlightenment, Spain stagnated, though this view is debated. Censorship proved ineffective, as banned books circulated widely. The Inquisition rarely targeted scientists, and few scientific works appeared on the Index. Spain enjoyed more political freedom than other absolute monarchies from the 16th to 18th centuries, influenced by
hermeticist religious ideas and early
enlightened absolutism. The Index aimed to protect laypeople from misinterpreting symbolic or complex texts, not to condemn the works outright. Scholars often accessed these books freely, and most banned texts, carefully collected by
Philip II and
Philip III, remain in the
Monasterio del Escorial library, accessible to intellectuals and clergy after Philip II's death. The Inquisition rarely intervened, though it occasionally urged the king to limit collecting grimoires or magic-related texts.
Offenses In 15th-century Spain, no distinction existed between religious and civil law. Breaking a religious law equated to violating tax laws–the Inquisition did not distinguish them. It prosecuted crimes often unnoticed by the public, including domestic offenses, crimes against vulnerable groups, administrative violations, forgeries, organized crime, and offenses against the Crown. These crimes encompassed sexual and family-related offenses, including
rape and
sexual violence—which the Inquisition uniquely prosecuted nationwide—
bestiality,
pedophilia (often overlapping with sodomy),
incest,
child abuse,
neglect, and
bigamy. Non-religious offenses included
procurement (not
prostitution),
human trafficking,
smuggling, forgery of
currency, documents, or
signatures, tax
fraud, illegal weapons,
swindles, disrespect to the Crown or its institutions (including the Inquisition, church, guard, and kings),
espionage,
conspiracy, and
treason. Non-religious crimes formed a significant portion of Inquisition investigations, though distinguishing them from religious crimes in records is challenging, as no official divide existed. Many crimes fell under the same legal article; for instance, "sodomy" included pedophilia as a subtype, with some data on male homosexuality prosecutions actually reflecting pedophilia convictions. Religious and non-religious crimes, while distinct, were often treated equivalently. Public blasphemy and street swindling, both seen as misleading the public, received similar punishments. Likewise, counterfeiting currency and heretical proselytism, viewed as spreading falsifications, faced death penalties and similar subdivisions. Heresy and material forgeries were treated comparably, suggesting equivalence in the Inquisition's view.
Blasphemy The Inquisition prosecuted verbal offenses as "heretical propositions" including outright
blasphemy, questionable statements about religious beliefs, sexual morality, or clerical misconduct. Many faced trials for claiming that fornication was not sinful or doubting aspects of
Christian faith, such as
Transubstantiation or the virginity of
Mary. Clergy occasionally faced accusations of such offenses. These cases rarely led to severe penalties.
Sodomy In 1524,
Pope Clement VII granted the Inquisition in Aragon jurisdiction over
sodomy following a petition from the Zaragoza tribunal. Castile's Inquisition declined similar authority, creating a significant regional disparity. Within Aragon, prosecution varied by local law, with Zaragoza's tribunal notably harsh. In 1541, the Inquisition executed Salvador Vidal, a priest, for sodomy, marking the first known case. Convicted individuals faced penalties like fines, burning in effigy, public whipping, or galley service. Valencia recorded the first burning for sodomy in 1572. The term "sodomy" encompassed non-procreative sexual acts condemned by the Church, including
coitus interruptus,
masturbation,
fellatio, and
anal coitus, whether heterosexual or homosexual. A 1560 ruling excluded lesbian sex without a
dildo from prosecution, but bestiality faced routine charges, especially in Zaragoza during the 1570s. Husbands also faced accusations for heterosexual sodomy with their wives. Accused individuals included 19.0% clergy, 6.0% nobles, 37.0% workers, 19.0% servants, and 18.0% soldiers and sailors. Nearly all of the roughly 500 cases involved
relationships between an older man and an adolescent, often coercive, with few involving consenting
homosexual adults. About 100 cases alleged child abuse. Adolescents, especially those under twelve or victims of rape, typically received lighter punishment or none. Prosecutions declined after the Suprema limited publicity. After 1579, public
autos de fe excluded sodomy convicts unless sentenced to death/ After 1610, even death sentences avoided public announcement. In 1589, Aragon set the minimum age for sodomy executions at 25, and by 1633, such executions largely ceased.
Bigamy The Inquisition prosecuted crimes against morals and social order, often clashing with civil tribunals. It frequently tried
bigamy, common in a society allowing divorce only in extreme cases. Men convicted faced 200 lashes and five to ten years of "service to the Crown", typically five years as a galley oarsman for unskilled individuals—a potential death sentence due to harsh conditions or ten years unpaid work in a hospital or charitable institution for skilled workers such as doctors or lawyers. In Portugal, the penalty was five to seven years as an oarsman.
Unnatural marriage The Inquisition classified marriages between individuals unable to procreate as "unnatural". The Catholic Church, particularly in war-torn Spain, prioritized reproduction in marriage. The policy applied equally to all, deeming non-reproductive marriages unnatural and reproductive ones natural, regardless of gender. Male sterility, caused by castration, war injuries (
capón), or genetic conditions preventing puberty (
lampiño), rendered a marriage unnatural. Female sterility, though harder to prove, also qualified. A notable case involving marriage, sex, and gender was the trial of
Eleno de Céspedes. ==Organization==