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Pierre de Rostegny de Lancre or Pierre de l'Ancre, Lord of De Lancre (1553 – 1631), was the French judge of Bordeaux who conducted a massive witch-hunt in Labourd in 1609. In 1582 he was named judge in Bordeaux, and in 1608 King Henry IV of France commanded him to put an end to the practice of witchcraft in Labourd, in the French part of the Basque Country, where in three years he burnt at the stake about six hundred persons.

He wrote three books on witchcraft, analysing the Sabbath, lycanthropy, and sexual relationships during the Sabbath. According to his opinion, Satan had little sexual intercourse with single women, because he preferred married women for that implied also adultery, and the incest between mothers and sons at the end of the Sabbath was essential to give birth to demonic children, as well as a sexual act between a witch and a he-goat (believed to be Satan present at the reunion). He also thought that Satan was pleased with a clean body but not a clean (or pure) soul, inducing people to wash their body and embellish themselves with ornaments.


His grandfather, Bernard de Rostegui, a native of Lower Navarre, had changed his Basque surname for the French one of de Lancre upon migrating to Bordeaux. This familial denial seems to have influenced him into a deep hate against everything Basque. He considered Basques to be ignorant, superstitious, proud and irreligious. Basque women were in his eyes libertines and Basque priests were for him just womanizers with no religious zeal. He believed that the root of Basque natural tendency towards evil was love of dance. All these prejudices are reflected in his work Tableau de l'Inconstance des Mauvais Anges et Demons, published in 1613, not long after the process.

Quoting from the Tableau at length, P.G. Maxwell-Stuart clarifies De Lancre's legal orientation on the evidence of witchcraft in Labourd:

The confessions of male and female witches are in agreement with indicia so strong that one can maintain they are genuine, real, and neither deceptive nor illusory. This relieves judges of any misgiving they may have. For when they confess to infanticide, parents find their children have been suffocated or their blood completely sucked out of them. When they confess to digging up corpses and violating the sacred nature of graves, one discovers that bodies have been torn from their graves and are no longer found where they had been put. When they confess they have given a piece of their clothing to Satan as a pledge, one finds this tell-tale scrap upon their person. When they say they have cast evil on such and such a person or animal, (and sometimes they confess they have cured them), it is self-evident they have been subject to malefice, they have been wounded, or they have been cured. Consequently, this is not an illusion. Here is the first rule which makes us see clearly what the witch has done, either through her confession strengthened by compelling indicia and very great, very strong presumptions, or by irreproachable witnesses. (Tableau Book 6, discourse 5, section 5, in Maxwell-Stuart's Witch Hunters: Professional Prickers, Unwitchers and Witch Finders of the Renaissance, 2003, 1st ed., p. 33)

In 1622, he published a second book: L'incredulité et mescreance du sortilège, that is an extension of his first one. Thanks to these books we know something of what happened in the process that de Lancre directed against the people of Labourd, because the judicial records vanished during the French Revolution.

P.G. Maxwell-Stuart writes on De Lancre in his Witch Hunters that:

...L'incredulité et mescreance du sortilège plainement convaicue (1622), produced twelve years after his long personal engagement with witches and witchcraft, spends an impressive amount of learning upon showing that magic of any kind is not an illusion and should not be dismissed by those who are pleased to think otherwise. This work aroused the ire of Gabriel Naudé, at one time physician to Louis XIII and later librarian to Cardinal Barberini, who in 1625 published a fierce response, Apologie pour tous les grands personages qui ont esté faussement soupçonnés de magie, to which De Lancre, duly irritated, replied two years later with his final work, Du sortilège. (p. 38)

On reconsidering de Lancre and his works, Professor Jonathan Pearl says the following in his Crime of Crimes: Demonology and Politics in France 1560-1620:

As already indicated, many historians have described de Lancre as a ridiculous obsessed fanatic. Terms like "gleeful," "gloating," "infantile," "sadistic" and "bigoted" have all been applied to him. But in his writing, de Lancre constantly emphasized the distastefulness of the task in which he was engaged. Certainly, he believed totally the testimony that he heard, sentenced people to death based on that testimony, and worked to convince his colleagues to follow his lead. But there is little evidence in his work to support the picture that has so often been drawn. (p. 142-143)

And that:

It would also be a mistake [...] to dismiss de Lancre as a crank, a bizarre or ridiculous figure. He was an earnest advocate of a worldview that was not insignificant in his time. He took seriously his instruction from respectable orthodox scholars, and did not waver from them for his long life. (p. 147)

The Labourd witch-hunt of 1609

The process began with a dispute between the Lord of Urtubi and some people that had accused him and his men to be witches. This dispute evolved in sporadic fight and soon the authorities of Donibane-Lohizune asked for the intervention of the Judge of Bourdeaux, who happened to be de Lancre.

Soon he put all Labourd upside down and in less than a year some 70 people were burnt at the stake, among them several priests. De Lancre wasn't satisfied: he estimated that some 3,000 witches were still at large (10% of the population of Labourd in that time). But the Parlement of Bordeaux eventually dismissed him from office.

In his Portrait of the Inconstancy of Witches, de Lancre sums up his rationale as follows:

To dance indecently; eat excessively; make love diabolically; commit atrocious acts of sodomy; blaspheme scandalously; avenge themselves insidiously; run after all horrible, dirty, and crudely unnatural desires; keep toads, vipers, lizards, and all sorts of poison as precious things; love passionately a stinking goat; caress him lovingly; associate with and mate with him in a disgusting and scabrous fashion--are these not the uncontrolled characteristics of an unparalleled lightness of being and of an execrable inconstancy that can be expiated only through the divine fire that justice placed in Hell?

(from the Foreword of the Tableau, page 5 in the Scholz Williams translation, punctuation mine)


  • Tableau de l'inconstance des mauvais anges et démons. Paris, 1612
  • On the Inconstancy of Witches: Pierre de Lancre's Tableau de l'inconstance des mauvais anges et demons (1612) edited by Gerhild Scholz Williams, 2006 (first English translation). [1] ISBN 0-86698-352-X
  • L'incredulité et mescréance du sortilège. Paris, 1622
  • Du Sortilège. 1627 (rare and less well-known work as reported by Montague Summers in his The History of Witchcraft)


  • Maxwell-Stuart, P.G. Witch Hunters: Professional Prickers, Unwitchers and Witch Finders of the Renaissance, 2003, 1st ed. ISBN 0-7524-2339-8
  • Pearl, Jonathan L. The Crime of Crimes: Demonology and Politics in France 1560-1620, 1999, ISBN 0-88920-296-6
  • Dueso, José Brujería en el País Vasco, Orain S.A., 1996. ISBN 84-89077-55-X
  • Scholz Williams, Gerhild. Defining Dominion: The Discourses of Magic and Witchcraft in Early Modern France and Germany, Ann Arbor, 1995. ISBN 0-472-10619-8
  • Summers, Montague. The History of Witchcraft and Demonology, 1992 Castle Books reprint ISBN 1555218067
  • Summers, Montague. The Geography of Witchcraft, 2003 Keegan Paul reprint, ISBN 0710308965

See also

es:Pierre de Lancre eu:Pierre de Lancre fr:Pierre de Rosteguy de Lancre it:Pierre de Lancre

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