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Case file s1347 · Money and markets · 1409
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1409
Le cadavre de Jean de Montagu détaché de la potence par son fils. G: Auteur(s): Langlois, Philibert, graveur Marck, dessinateur Autre titre: De 1226 à 1469 / De l'avènement de St L
Le cadavre de Jean de Montagu détaché de la potence par son fils. G. Langlois, Philibert, graveur. CC0, Wikimedia Commons.
Died
17 October 1409
Place
Paris and Marcoussis, Essonne, France
Field
royal finance, land · Royalty and nobility on the timeline
Legal tradition
French royal justice; confiscation and later rehabilitation by the king's council · Civil law · Royal and church law
Historical event
the Armagnac-Burgundian civil war under the mentally ill Charles VI
Money and marketsBodies, bones and burialsMurder and sudden deathCrowns and successionMedievalEuropeFrance

France's grand master was beheaded and hung at Montfaucon; his son won back his name and body, then died at Agincourt

Jean de Montaigu rose from royal secretary to grand master of the royal household under Charles VI of France. From the income of his offices he built a fortune. Between 1388 and 1409 he built a château at Marcoussis modelled on the Louvre and the Bastille, and he enlarged the Celestine monastery there. During one of the king's spells of madness, Duke John the Fearless of Burgundy, who wanted control of the regency and its income, had him arrested. The queen and the Duke of Berry asked for his release. After a summary trial he confessed to treason under torture. He was beheaded at Les Halles on 17 October 1409, and his body was hung at Montfaucon. Herodote lists him in a line of French finance chiefs who ended there. His son Charles obtained his rehabilitation†, which the town of Marcoussis dates to 12 September 1412†, and his remains were placed in a tomb in the Celestine monastery at Marcoussis. Charles was killed at Agincourt on 25 October 1415†. The estate passed through confiscations and family claims; in the early 16th century Louis Malet de Graville turned the fortress into a residence. The château was looted in the Revolution and demolished in 1805 and 1806. Its ruins in Marcoussis are a listed historic monument, open one Saturday a month.

What the law took from it

A family can recover a confiscated name and grave, but an estate that depends on one heir can be lost again in a single battle.

Sources
  1. herodote.netPress
  2. sortiraparis.comPress
  3. iledefrance.frPress
  4. executedtoday.comPress
  5. Wikipedia (English)Encyclopedia

Cite as: celebrity.estate, “France's grand master was beheaded and hung at Montfaucon; his son won back his name and body, then died at Agincourt,” story s1347, https://www.celebrity.estate/jean-de-montaigu-1409, updated 30 October 2026.

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Where this case sits

Money and marketsBodies, bones and burialsMurder and sudden deathCrowns and successionMedievalEuropeCivil lawRoyal and church lawFrance