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The thread from Jewish expulsion to the Atlantic world: the 1492 Alhambra Decree and the conversos it created, Columbus sailing the day after the deadline with converso officials funding the crown, and the Sephardic diaspora that reached Amsterdam...
The thread from Jewish expulsion to the Atlantic world: the 1492 Alhambra Decree and the conversos it created, Columbus sailing the day after the deadline with converso officials funding the crown, and the Sephardic diaspora that reached Amsterdam, the Ottoman lands, and New Amsterdam in 1654.
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Medieval Christian preaching held Jews collectively and permanently guilty for the death of Jesus, a charge known as deicide. Church teaching cast them as a people meant to live in subjection as witnesses to their supposed error. This theology, which the Catholic Church formally repudiated in 1965, framed Jews as outsiders and supplied the language of later persecution.
After a boy named William was found dead near Norwich, a monk later accused local Jews of ritually murdering him, the first recorded case of the blood libel. There was no evidence, and the claim that Jews killed Christian children for their blood was pure invention. The myth spread across Europe and set off massacres for centuries. It was a documented falsehood.
The Third Lateran Council and later canon law forbade Christians from lending money at interest, which the Church called the sin of usury. Barred from most guilds, from owning land, and from many trades, some Jews filled the gap as moneylenders, a role rulers allowed because they could tax it heavily. The debts that resulted bred resentment among Christian borrowers. Historians stress the niche was forced on Jews by exclusion, not chosen out of any group trait.
The Fourth Lateran Council, called by Pope Innocent III, required Jews and Muslims to wear distinguishing clothing or badges so Christians would not mix with them unknowingly. It also moved to bar Jews from public office and to limit their contact with Christians. These rules formalized segregation and marked Jews as a group apart. Later states would harden this legal separation into ghettos and exclusion.
A convert from Judaism accused the Talmud of blasphemy, prompting a forced disputation before the French court in which rabbis had to defend their own sacred texts. The trial ended in condemnation, and in 1242 wagonloads of Talmud manuscripts were burned in Paris. Forced disputations trapped Jews in a debate they could not win, since a strong defense could itself be treated as an attack on Christianity.
When a boy called Hugh was found dead in Lincoln, authorities accused the town's Jews of killing him in a ritual. Around ninety were arrested and roughly nineteen executed after confessions extracted under threat. The cult of Little Saint Hugh grew from a baseless charge. King Henry III's direct role in the trials showed how the crown could use the libel to justify seizing Jewish property.
King James I of Aragon summoned the scholar Nachmanides to a public disputation with the convert Pablo Christiani over whether Jewish texts proved Jesus was the messiah. Nachmanides was promised free speech but was later punished for the written account he gave and chose to leave Aragon. These staged debates were meant to pressure Jews toward conversion rather than to seek any honest conclusion.
As western states expelled Jews, rulers in the east invited them in. The Statute of Kalisz of 1264, later confirmed and widened by King Casimir the Great, granted Jews legal protection, freedom of worship, and the right to trade and lend. Over the following centuries Poland-Lithuania grew into the home of the largest Jewish population in the world. The contrast shows that expulsion was a political choice, not an inevitability.
English kings treated Jews as royal property and taxed them through heavy levies called tallages until the community was drained of wealth. Once the Jews could no longer yield revenue, expelling them let the crown cancel its own duty to protect them and seize outstanding debts and assets. Historians describe the method as squeezing a sponge dry and then throwing it away. The 1290 expulsion followed decades of this fiscal exploitation.
King Edward I issued the Edict of Expulsion, ordering every Jew out of England. Around 2,000 to 3,000 people were forced to leave, and Jews would not be legally readmitted until the 1650s. It was the first permanent expulsion of a Jewish community by a European kingdom, and it set a pattern that other states copied.
Historians see the recurring medieval expulsions of Jews as driven by a mix of religious zeal and fiscal need, the two reinforcing each other. Church teaching, the blood libels, and the pressure to convert supplied the hostility; rulers supplied the motive of profit, taxing their Jewish subjects as a 'royal sponge' and then expelling them to cancel their own debts and seize their property. Piety and plunder ran together.
A new accusation claimed Jews stole and stabbed the consecrated communion host to torment Christ, a charge that made little sense even in Christian terms since Jews did not accept the doctrine behind it. In 1298 a nobleman known as Rintfleisch led mobs that destroyed scores of Jewish communities across German lands. The host desecration myth, like the blood libel, was invented and then used to justify slaughter.
Across medieval Europe rulers expelled Jews again and again: England in 1290, France repeatedly through the 1300s, many German cities, and finally Spain and Portugal in the 1490s. Each expulsion let a ruler pose as a defender of the faith while canceling debts owed to Jews and taking their property. The pattern reflects persecution driven by a mix of religious zeal and fiscal need. Jews were often readmitted when a ruler wanted their trade and taxes, then expelled once more.
King Philip IV had the Jews of his royal domains arrested, seized their property and debts owed to them, and expelled them. Jews were readmitted and expelled several more times over the next century. The final expulsion came in 1394 under Charles VI, ending organized Jewish life in medieval France.
As plague killed a third of Europe, rumors spread that Jews had poisoned the wells. Mobs massacred Jewish communities across the Rhineland, Spain, and elsewhere, and many towns expelled survivors. The killings had no basis in fact, and even Pope Clement VI condemned them as slander.
Riots that began in Seville spread across the Iberian kingdoms, killing thousands of Jews and destroying whole communities. To survive, tens of thousands accepted baptism. This wave created the large class of conversos, or New Christians, whose sincerity later rulers and the Inquisition would question for generations.
After the mass conversions, a large population of New Christians lived in Spain and Portugal, some devoutly Catholic and some secretly keeping Jewish practices. Enemies called the secret practitioners Marranos, a slur meaning swine. Historians agree crypto-Judaism was real for some families, while stressing that many conversos were sincere Christians wrongly suspected because of their ancestry.
The longest of the forced disputations ran for over a year, staged by the antipope Benedict XIII to press Spain's Jews toward baptism after the massacres of 1391. Rabbis were made to defend their faith under duress while preachers worked the frightened communities outside. Thousands converted during and after it, swelling the converso population whose loyalty the Inquisition would later come to doubt.
also in The Sephardic Jews: golden age and exile
A revolt in Toledo produced the first limpieza de sangre statute, barring people of Jewish ancestry from offices and guilds even when they and their families were baptized Christians. The doctrine moved suspicion from religion to blood, treating converso descent as a permanent stain. It marked a turn toward judging people by ancestry rather than faith, an idea the Church itself questioned at first before it spread across Spain.
Notarial records and Columbus's own references point to his birth around 1451 in or near Genoa, the son of a wool weaver named Domenico Colombo. This Genoese origin is the mainstream scholarly view, supported by contemporary documents. It stands against the various later theories, including secret-Jewish, Catalan, and Portuguese origin claims, which lack comparable evidence.
also in The Sephardic Jews: golden age and exile
At the request of Ferdinand and Isabella, Pope Sixtus IV authorized a Spanish Inquisition under royal control. Its first target was not Jews but conversos suspected of secretly practicing Judaism. Tomás de Torquemada became the first Grand Inquisitor and made the tribunal a feared instrument of religious policing.
The relentless hunting of conversos had a grim internal logic. As forced converts they were now baptized Christians, so, unlike practising Jews, they fell under the Inquisition's jurisdiction and could be tried for heresy; conversion made them more vulnerable, not less. The tribunals feared 'Judaizers' secretly keeping the old faith, the 'purity of blood' statutes made the suspicion hereditary regardless of sincerity, and the confiscation of the accused's property helped fund the Inquisition itself. Faith was the pretext; blood, social control, and money were the drivers.
Luis de Santangel, keeper of King Ferdinand's privy purse and a member of a prominent converso family, helped arrange the money for Columbus's voyage after the crown first hesitated. He advanced and organized funds drawn largely from royal and treasury sources. This is documented court finance, not a private Jewish scheme, since Santangel was a Catholic official of the Aragonese crown.
Luis de Torres, a converso who knew Hebrew, Aramaic, and Arabic, was baptized shortly before sailing and joined the voyage as an interpreter. Columbus expected to reach Asia and thought these languages might help in talks with its rulers. Torres was among the first Europeans to land in the Americas and is often described as the first person of Jewish origin to do so.
In January 1492 Ferdinand and Isabella took Granada, the last Muslim kingdom in Iberia, ending centuries of Christian reconquest. With the peninsula unified under Catholic rule, the monarchs turned to enforcing a single faith. The expulsion decree for the Jews came only weeks later. Historians tie the timing to a drive to complete a one-faith realm, with the unresolved converso question at its center.
also in The Sephardic Jews: golden age and exile
Ferdinand and Isabella signed the Alhambra Decree, giving the Jews of Spain until the end of July to convert or leave. Estimates of those expelled range widely, from tens of thousands to over a hundred thousand. Many fled to Portugal, North Africa, and the Ottoman lands, scattering Sephardic Jews across the Mediterranean and beyond.
Columbus's first voyage left the port of Palos on 3 August 1492, just after the final deadline for Jews to leave Spain. The two events fell in the same summer, and the harbor was crowded with departing refugees. The overlap is a documented coincidence of timing, not evidence that the voyage was arranged as part of the expulsion.
Gabriel Sanchez, the treasurer general of Aragon and also of converso descent, was among the royal officials involved in backing the expedition. Columbus later addressed a famous letter announcing his findings to Sanchez. Several New Christians held senior posts at court, which reflects their real place in Spanish administration rather than any hidden control of it.
Many exiles crossed to Fez, Tlemcen, and other cities of the Maghreb, where established Jewish communities absorbed them, not always easily. The newcomers, called megorashim, kept their Spanish customs distinct from the local Jews for generations. These communities became another anchor of the Sephardic world after 1492.
Sultan Bayezid II opened the Ottoman lands to Jews fleeing Spain, reportedly mocking Ferdinand for impoverishing his own kingdom to enrich the sultan's. Thousands settled in Salonica, Istanbul, and other cities, where Sephardic communities and their Ladino language flourished for centuries. The Ottoman refuge became the largest single destination of the 1492 exile.
also in The Sephardic Jews: golden age and exile
King Manuel I had promised to expel the Jews as a condition of his marriage to a Spanish princess, but he did not want to lose their skills. Instead he ordered a mass forced baptism in 1497, seizing children and dragging families to the font. This created a huge converso population in Portugal whose descendants carried crypto-Jewish traditions for centuries.
During a drought and plague, a crowd in Lisbon turned on the New Christians, accusing them of insincere faith. Over several days a mob killed roughly 2,000 people of converso background. The killing showed that baptism had not made the converts safe, and it pushed many to plan escape.
A tribunal of the Inquisition was established in Mexico City to police the faith of the Spanish colonies, including conversos suspected of secret Judaism. The Carvajal family became its most famous victims, and Luis de Carvajal the Younger was burned at an auto-da-fe in 1596. The persecution followed the New Christians across the Atlantic into the New World.
From the late 1500s, New Christian merchants left Portugal for the tolerant Dutch Republic, where many openly returned to Judaism. Their congregations merged into the Talmud Torah community, and by 1675 they built the grand Portuguese Synagogue. Amsterdam became the intellectual and commercial capital of the Western Sephardic diaspora.
Spain set up Inquisition courts in Lima in 1569 and Cartagena in 1610 to enforce religious conformity in South America. In 1639 the Lima tribunal staged a mass trial known as the great complicity, condemning many Portuguese merchants as crypto-Jews. The trials mixed genuine cases of hidden practice with confiscation of wealthy traders' property.
When the Dutch held Pernambuco, conversos and Jews from Amsterdam settled openly in Recife and founded Kahal Zur Israel, the first synagogue in the Americas. Rabbi Isaac Aboab da Fonseca served the community, the first ordained rabbi in the New World. The colony grew rich on sugar until Portugal retook it.
Sephardic Jews from Amsterdam settled on Curacao, Barbados, and other islands, founding synagogues such as Mikve Israel and Nidhe Israel. They traded in sugar, ships, and credit, using family and language ties that linked Atlantic ports across the Dutch and British empires.
The Portuguese reconquered Recife in 1654, ending the open Jewish community there under threat of the Inquisition. Most Jews sailed back to Amsterdam, while others dispersed to the Caribbean and North America. Their flight carried the Sephardic Atlantic network to new ports.
Twenty-three Jewish refugees from Recife arrived in the Dutch port of New Amsterdam, the future New York, and formed the first Jewish community in what became the United States. Governor Peter Stuyvesant tried to turn them away, but the Dutch West India Company, which had Jewish shareholders, overruled him. Their congregation, Shearith Israel, still exists today.
Sephardic families in Amsterdam took part in the sugar and tobacco trades, colonial shipping, and the early Amsterdam stock exchange, where Joseph de la Vega wrote the first book on the market. Their networks mattered, yet they were a minority working alongside far larger Dutch, English, and Portuguese Christian interests. Documented economic history shows participation and skill, not the domination that later myths claim.
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