The Knight Who Became Bluebeard

He was the golden boy of France — a knight so brave he rode beside Joan of Arc, so rich he was practically a king, a Marshal of France before he was twenty-five. And then, when the trumpets of war fell silent, Gilles de Rais went home to his castles and became something else entirely. Over eight years, in towers overlooking the Loire and the Vendée, children began to disappear — dozens, perhaps over a hundred. When the truth came out in 1440, it produced the most detailed serial killer trial of the Middle Ages — and a monster so complete he became a fairy tale. This is the real Bluebeard — the hero who became a nightmare.

Gilles de Montmorency-Laval was born around 1405 into almost unimaginable wealth. The barony of Rais sprawled across the borders of Brittany and Anjou — castles, forests and lands that made him one of the richest men in France before he was grown. Orphaned young, he was raised by his grandfather, a crusading hero, and trained for one thing: war. He was brilliant at it. Brave to the point of recklessness, superbly educated, he was exactly the kind of young nobleman a dying kingdom desperately needed. When an illiterate peasant girl named Joan of Arc arrived in 1429 promising to save France, Gilles rode beside her into legend.

At Orléans, Gilles fought in the savage battles that lifted the English siege — the miracle that turned the Hundred Years’ War. He was there at the storming of the bastilles, wounded in the fighting, and when Charles VII was crowned at Reims, it was Gilles de Rais, newly made Marshal of France, who was given the supreme honour of guarding the holy oil of the coronation. He was twenty-four years old and the most glittering young knight in the kingdom. Nobody looking at him — not the king, not Joan, not the cheering crowds — could have imagined what the same man would do once the fighting stopped.

The turn came quietly. In 1432 his grandfather died, removing the last person who could control him, and Gilles withdrew to his castles. And there, with unlimited money and no one to say no, he began to unravel. He spent like a man trying to outshine God — a private chapel of thirty clergy dressed like cardinals, a colossal play about the siege of Orléans with costumes of silk and fur, worn once and given away. He burned through one of the great fortunes of Europe so fast that his horrified family obtained a royal decree forbidding him to sell land. He sold it anyway. He needed money for something happening in his towers.

The Horror

From around 1432 onwards, children began vanishing in the countryside around his castles — Tiffauges, Machecoul, Champtocé. Poor children, beggars’ children, beautiful children — lured by his servants, the trial record says, with food, with errands, with promises of work. Once inside, they were taken up into the towers. What happened there, Gilles confessed in his own words: the children were abused, then murdered — throats cut, bodies dismembered — and he took pleasure in watching them die, sometimes kissing the heads of the ones he found most beautiful. The bodies were burned in the great castle fireplaces. When one hearth filled with ash and bone, the killing moved to the next castle.

And there was a second darkness running alongside the first. Desperate for money and power, Gilles turned to alchemy and black magic, surrounding himself with occultists and priests-for-hire. Chief among them was a young Italian cleric named François Prelati, who conducted rituals in the castle chambers to summon a demon called Barron. According to Prelati’s own testimony, the experiments required ingredients that could only come from murdered children — and Gilles supplied them from his towers, offering the blood, the eyes and the hearts of his victims in conjuring circles drawn on the floor. The demon never appeared. The children kept disappearing.

For eight years, nobody stopped him. Parents complained, children kept vanishing — but he was a Marshal of France, and his friends were dukes. What brought him down was not the children. In May 1440, in a dispute over a castle he had sold and wanted back, Gilles led armed men into the church of Saint-Étienne-de-Mer-Morte during Mass on Pentecost, and kidnapped a priest at swordpoint from the altar. Now he had made enemies who could act. The Duke of Brittany and the Bishop of Nantes launched an investigation, and the bishop’s men went village to village taking testimony. And the parents, at last, began to speak: my son went to the castle. He never came home.

The trial at Nantes in October 1440 nearly broke him before it began: threatened with torture and excommunication, Gilles collapsed and confessed everything, in detail so ghastly the record itself flinches — parts were written in Latin, as if French was too honest a language for it. On 26th October 1440, Gilles de Rais was led to a meadow outside Nantes, hanged, and his body thrown onto a fire — but before the flames could take him, ladies of the highest nobility stepped forward and cut him down, to carry him to burial in the Carmelite church. Even at the end, France could not treat him as common filth. His two accomplices were simply burned alive.

The Modern Relic

His castles are still there. The great ruin of Tiffauges rises over the Vendée exactly as it stood when the children were carried up its towers — locals have called it ‘the castle of Bluebeard’ for centuries, and you can still stand in the hall where the fireplace burned. The ruins of Machecoul still stand above the town; the broken walls of Champtocé, where Gilles was born, overlook the Loire. The trial record survives — hundreds of pages, one of the most complete criminal dossiers of the Middle Ages. And in 1697, Perrault turned him into a fairy tale: a wealthy man with a blue beard, a locked room, and the bodies inside it. Here is the honest complication. Some historians have argued that Gilles de Rais was framed — that the Duke of Brittany and the bishop, who divided his lands between them, manufactured the monster to destroy a ruined debtor. The confession was extracted under threat of torture. No bodies were ever produced in court. But the counterweight is the record itself: parent after parent, village after village, naming their missing children year by year — testimony gathered before Gilles was even arrested. He was probably guilty of most of it, and possibly of more than anyone could prove. Either way, France chose to remember the monster — ‘Bluebeard’ is now a word every child knows.

A Marshal of France, buried by noblewomen. A companion of Joan of Arc, reborn as a fairy-tale killer. And a trail of missing children that began in peacetime, because no one was left to say no. Gilles de Rais is the oldest warning in the history of crime: what we celebrate in war does not always retire quietly when the war ends. The towers of Tiffauges still stand against the evening sky, and the fireplace is still there, cold for six hundred years. Stand before it at dusk, with the wind off the fields the children crossed, and you understand why France never stopped telling this story. Some truths need a locked room.

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