Gilles de Rais

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Gilles de Rais was a fifteenth-century Breton lord, one of the richest nobles in France and a Marshal of the realm, who in the last years of his life pursued alchemy and the conjuration of demons, and was tried and executed at Nantes in 1440 — not for the conjuring alone, but for the abduction, torture, and murder of scores of children, to which he confessed. He belongs to occult history less for anything he wrote or founded than for the trial record itself — among the most detailed surviving European documents of how a wealthy patron of the period sought, and paid for, contact with hidden powers.

His early career was conventional for his rank. Born around 1405 into the house of Montmorency-Laval, he inherited vast estates, fought in the French campaigns of the Hundred Years’ War, and rode in the company of Joan of Arc at Orléans and Reims; he was raised to Marshal of France in 1429, at roughly twenty-four. After the wars he withdrew to his Breton castles and spent on a scale that consumed the inheritance — chapels, retinues, a private collegiate establishment with its own singers. As the money ran out, he turned to men who promised to make more of it.

The alchemical and conjuring work is what the trial chiefly documents. From the late 1430s he gathered a series of practitioners at Tiffauges and Machecoul, foremost among them a young Italian cleric, Francesco Prelati, who claimed to command a demon he called Barron. The court records describe repeated operations: alchemical furnaces meant to transmute base metal into gold, and nocturnal conjurations in which signs were drawn, offerings prepared, and the spirit summoned to deliver knowledge, riches, or power. By the testimony, the demon never appeared to Gilles himself, and the gold never came.

The end came through a secular quarrel. In 1440 he seized a cleric during a dispute over a sold estate, violating ecclesiastical jurisdiction and giving the Bishop of Nantes and the Duke of Brittany the opening to move against him. Two courts sat in parallel — an episcopal inquisition trying heresy, apostasy, and the invocation of demons, and a ducal court trying the murders. The conjuring was not the heart of the case: both courts charged that for years children from the villages around his castles, most of them boys, had been taken into his households and killed — the church court’s sentence put the number at one hundred and forty or more. He confessed to the murders, was condemned, and was hanged and burned in October 1440.

What the case actually shows is contested. The confessions were taken under threat of torture and excommunication, before judges who stood to gain his forfeited lands, and the heresy and conjuration charges were, in the law of the day, the ground on which a peer could be reached at all; some historians read the proceedings as substantially political. That remains a minority reading — most historians accept that the murders occurred. What is not in doubt is that the record preserves, in unusual detail, the vocabulary and apparatus of fifteenth-century demonic conjuration as one of its alleged practitioners described it. Four centuries later the figure was taken up by Romantic and decadent writers — Huysmans above all — who refashioned the historical lord into a literary emblem of the magician damned by his own appetites, an image that has largely overwritten the man the documents describe.

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