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Ilustración de Alonso de Salazar, realizada por Ricardo Sánchez «Risconegro Creatividad», publicada por primera vez en la revista «La Aventura de la Historia»

Alonso de Salazar Frías

An inquisitor who used evidence to stop witch executions in Spain

Historical

Photo: Oscar Montañés, CC BY-SA 4.0, via Wikimedia Commons

A Spanish judge and theologian who served the Inquisition in the early 1600s. He argued that witchcraft accusations were often dreams or lies, leading to policies that saved many accused people from death.

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  • Called 'The Witches’ Advocate' by historians
  • Investigated 1384 child witches in Navarre
  • Argued witchcraft was a product of imagination
  • Instructions of 1614 saved many from execution
  • Worked in Logroño during the 1609-1614 panic

What it is

Alonso de Salazar Frías was a high-ranking official in the Spanish Inquisition during the seventeenth century. Historians call him 'The Witches’ Advocate' because he fought against the execution of people accused of witchcraft. At a time when many Europeans believed witches were real and dangerous, Salazar argued that most accusations came from dreams, fantasies, or forced confessions. He helped change the rules so that judges needed solid proof before punishing anyone. His work made Spain one of the first places in Europe to largely stop killing supposed witches.

Where it comes from

Salazar was born around 1564 in Burgos, Spain, into a family of lawyers and merchants. He studied law at the University of Salamanca and became a priest. He rose through the church ranks, eventually becoming an inquisitor in Logroño in 1609. This region was facing a massive wave of witch hunts involving hundreds of children and adults. The panic was partly fueled by similar hunts happening just across the border in France. Salazar arrived as the third judge on a panel that initially supported the prosecutions but soon grew skeptical of the evidence.

How it is done

Salazar changed how trials were handled. Instead of accepting confessions at face value, he sent alone to investigate the villages. He looked for physical proof of witch gatherings, which did not exist. He noted that accused people gave different stories about where the devil sat or what ointments they used. He found that many claims were impossible, like flying while others were in bed. He insisted that records must include all contradictions and retractions, rather than hiding them. He also stopped the use of torture to force new names out of the accused.

Tools and materials

The main tools Salazar used were careful observation and written records. He relied on empirical evidence, such as checking if alleged meeting places were actually empty at night. He used questionnaires to test if experiences were dreams or reality. He required scribes to write down every contradiction in a witness's story. He rejected fake substances claimed to be magical powders. His method was based on logic and the lack of physical proof, rather than spiritual rituals or charms.

Alonso de Salazar Frías, drawn and placed

Emblem With the moon shape. Drawn from this page, not a photograph.
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Where it sits The tradition it belongs to, and when it is done.

What it is for

His goal was to protect innocent people from execution based on false beliefs. He wanted to stop the spread of fear caused by rumors and public spectacles like auto-da-fé ceremonies. By demanding independent evidence, he aimed to show that witchcraft sects were products of imagination. He sought to bring peace to Navarre by silencing public discussion of witchcraft, which he saw as a craze driven by children and simple folk hearing about French persecutions.

Who does it

Salazar was a trained lawyer and Catholic priest. He held positions as a vicar-general and later as an inquisitor. He was chosen for his intelligence and single-minded approach. He worked within the Supreme Council of the Inquisition in Madrid. His authority came from his position as a judge and his relationship with powerful bishops. He acted alone during key investigations to avoid pressure from other inquisitors who favored harsher punishments.

Peoples and places

The subject is primarily associated with Spain, specifically the Basque regions of Navarre. The accused came mostly from the villages of Zugarramurdi and Urdax. The panic was influenced by events in neighboring France, where Judge Pierre de Lancre conducted his own hunts. Salazar’s ideas spread through Catholic Europe via the Inquisition’s instructions. His work contrasted with the mass burnings happening elsewhere in Europe at the time.

At a glance: who, where and when

Peoples

Belief worlds

What people believe

Salazar challenged the common belief that witches could fly, shapeshift, or attend secret meetings. He argued that such claims exceeded human reason and even the limits of the devil’s power. He believed the devil might delude people into thinking they attended gatherings, creating uproar and incriminating innocents. He held that testimony from accomplices was insufficient without external facts. His view was that witchcraft was a fantasy, not a real supernatural force.

When it is done

Key events happened between 1609 and 1614. The major trials began in June 1609. A large public trial (auto-da-fé) occurred in 1610, attended by thousands. Salazar’s investigation lasted from May 1611 to nearly February 1612. The influential Instructions were issued in 1614. These dates mark the peak of the Navarre witch hunt and the subsequent policy shift.

How scholars and sceptics see it

Historians recognize Salazar as a pivotal figure in reducing witch executions. They note his use of the inductive method and empiricism. Scholars point out that his skepticism was not unique; other inquisitors shared his views since 1526. However, Salazar restated these ideas with overwhelming evidence. His work is seen as a rational response to a social panic. Researchers acknowledge that his reports directly shaped Inquisition policy, making Spain an outlier in its treatment of accused witches.

Cautions and what is closed

The witch hunts caused immense harm. Hundreds of people were imprisoned, tortured, and executed. Children as young as six were accused and pressured to confess. Public trials whipped up anxiety and led to more accusations. Salazar himself admitted that previous inquisitors had failed to keep proper records and allowed violence. The system relied on fear and rumor, leading to unjust convictions. His reforms aimed to prevent these harms by demanding proof.

Compare and confuse

Salazar’s approach differed from the mass hysteria seen in France under Pierre de Lancre. While Lancre burned over 80 people, Salazar’s methods saved lives. His work is compared to other skeptical voices in the Inquisition, such as those from Granada in 1526. However, his 1614 Instructions were more detailed and widely adopted. He is distinct from earlier judges who accepted confessions without scrutiny. His legacy is tied to legal reform rather than theological debate.

Law and persecution

The Spanish Inquisition issued the Instructions of 1614, which adopted Salazar’s suggestions. These rules forbade arrest based solely on another witch’s confession. They required recording all contradictions and retractions. They banned public discussion of witchcraft to stop the craze. These laws protected accused people from execution. Spain became one of the first European countries to rule against the death penalty for witchcraft. The laws remained influential throughout Catholic Europe.

Questions people ask about Alonso de Salazar Frías

Who was Alonso de Salazar Frías?

He was a Spanish inquisitor and lawyer in the early 1600s. He is known for arguing that witchcraft accusations were often false, helping to stop executions in Spain.

Why is he called 'The Witches’ Advocate'?

Historians use this title because he fought against the conviction of witches. He demanded solid proof and showed that many confessions were lies or dreams, saving people from death.

What did he do during the Navarre witch trials?

He investigated the cases in Zugarramurdi and Urdax. He found no physical proof of witch gatherings and noted that accused people gave contradictory stories. He stopped the use of torture to force new names.

How did his work change Spanish law?

His ideas were included in the Instructions of 1614. These rules required independent evidence for convictions and banned public discussion of witchcraft, reducing the number of executions significantly.

Did he believe witches existed?

He believed the devil existed but doubted that humans could perform the acts accused of witches. He thought claims of flying or shapeshifting were impossible and likely delusions or lies.

Good reading and sources

Where this page comes from

The facts on this page come from the Wikipedia article "Alonso de Salazar Frías", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). EveryJaadu rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.

It may contain mistakes. Names and customs differ from one community to the next, and some knowledge is closed to outsiders and left out here. This page describes belief and practice. It does not say that any of it works, it is not a how-to, and it is not medical advice. If something is wrong, tell us. Last refreshed 2026-10-06.

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