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Jules-Henri Desfourneaux

Jules-Henri Desfourneaux is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Jules-Henri Desfourneaux rather than just read about it. In short: Jules-Henri Desfourneaux (French pronunciation: [ʒyl ɑ̃ʁi defuʁno]; 17 December 1877 – 1 October 1951) was a French executioner who served as the 5th Monsieur de Paris from 1939 until 1951. He was the last executioner to officiate in public.

Jules-Henri Desfourneaux — main illustration
Jules-Henri Desfourneaux — illustration

Key takeaways

  • Jules-Henri Desfourneaux belongs to physics; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Jules-Henri Desfourneaux to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Jules-Henri Desfourneaux from memory before moving on to harder problems.

Reference excerpt

Jules-Henri Desfourneaux (French pronunciation: [ʒyl ɑ̃ʁi defuʁno]; 17 December 1877 – 1 October 1951) was a French executioner who served as the 5th Monsieur de Paris from 1939 until 1951. He was the last executioner to officiate in public. Desfourneaux participated in around 350 executions and officiated as the chief executioner among 190 of them.

Early life and family Desfourneaux was born in Bar-le-Duc to Nicolas Ernest Desfourneaux and Catherine Jeannot, as the youngest of three children; a fourth brother was stillborn in 1879. His father was a shirt tailor and carpenter while his mother was a homemaker. Following the death of his mother on 16 May 1892, Desfourneaux's father moved the family to the 14th arrondissement of Paris. Desfourneaux's paternal family have acted as executioners for several prefectures and subprefectures in central France, the earliest known being Jean Desfourneaux from 1706 to 1747 in Vierzon. There have been at least twelve Desfourneaux executioners between the 18th and 19th century in Vierzon, Issoudun, Bourges, Moulins, Metz, Blois, and Châteauroux, sometimes as many as three generations. Nicolas Ernest Desfourneaux, however, had chosen not to pursue the family profession in the mid-19th century, not long before local executions were abolished in 1870 and restructured to be performed by a national chief executioner office.

Career As a youth, Desfourneaux gained a keen interest in the make and design of velocipedes, particularly those powered by internal combustion engines. Desfourneaux became a motorboat mechanic and worked abroad as a teenager, including Russia and India. On 30 December 1895, he enlisted in the Troupes de marine for four years, not including eleven months of training. Desfourneaux was stationed in French Indochina between 1897 and 1899. He was secretive about his life before becoming an executioner, but it is known that he got a tattoo on his left hand during this time, a snake coiling around a dagger. It was noted that this was a common motif amongst mariners, specifically to convey a desire for vengeance, but Desfourneaux refused to tell anyone his reason for this design choice.

Substitute assistant Returning to France in the early 1900s, Desfourneaux entered an affair with Parisian woman Juliette Foussadier, who gave birth to his son Fernand in 1905. In 1907, he became the fiancée of Georgette Rogis, a common-law niece of chief executioner Anatole Deibler and member of another prominent executioner family. Two distant cousins of Desfourneaux, Edouard and Léopold Desfourneaux, were working as assistants under Deibler. After they were formally introduced, Deibler, who did not have a son to serve as a potential successor to the chief executioner title, recruited his prospective nephew as an occasional substitute executioner's assistant in late 1908. He attended his first execution on 11 January 1909 in Béthune, when the four leaders of the Pollet Gang were executed. On 17 April 1909, the couple married in a ceremony held at the high-class Le Pré Catelan restaurant in Bois de Boulogne, after which Desfourneaux partook more often in Deibler's executions, though keeping his primary work as a mechanic. Desfourneaux's domestic life was tumultuous. Desfourneaux had been secretly caring for his illegitimate firstborn, which he continued to do after the birth of his son René in 1910. His wife Georgette, despite being 12 years his junior, was controlling of the household's finances, which influenced Desfourneaux's spending habits. Georgette also made Desfourneaux go by Henri rather than Jules as she "hated the name" and forced him to burn off his snake tattoo. Desfourneaux's son René also seemed disinterested in becoming an executioner.

Second assistant After serving during World War I, Desfourneaux received the title of second executioner's assistant in 1919. In May 1922, Desfourneaux met André Obrecht, his common-law cousin, when Deibler hired him as a second assistant. Both men instantly disliked one another, as Obrecht criticised Desfourneaux for his perceived slowness and clumsy performance during executions. Desfourneaux himself grew increasingly uneasy after each execution and would not be on speaking terms for some time. In 1926, Desfourneaux began operating an auto repair shop with René in the 16th arrondissement of Paris.

First assistant On 7 February 1930, Desfourneaux was named first assistant after the death of its previous holder, his father-in-law Louis Rogis. The position made it so that he was to replace Deibler in case of death, unless Deibler explicitly named a different successor. On 2 November 1934, René Desfourneaux died by suicide in Le Havre, aged 24, following a failed romantic relationship. The death of his son caused Desfourneaux to become depressed and he began abusing alcohol in order to cope with the loss. He closed down his auto shop during this time and instead took a job as a delivery driver for an electronics manufacturer. On 14 January 1938, Desfourneaux performed his first direct execution in Saint-Brieuc, as Deibler was unavailable due to illness. 23-year-old Lucien Boulay was executed for the rape and murder of 9-year-old Thérèse Rouault.

Chief executioner When Anatole Deibler died of a heart attack in February 1939, it was yet undecided who would take the chief executioner office. On 4 February, two days after Deibler's death, Desfourneaux executed Maurice Pilorge for the murder of his lover Néstor Escudero. Pilorge was meant to be executed by Deibler on the day of his death as his 300th beheading in the chief executioner role and had been given a stay of execution as a result. Given the choice between Desfourneaux and Obrecht, Deibler's widow Rosalie spoke in favor of Desfourneaux, since he had amassed a large debt and would be unable to repay her if he did not earn a high salary. Desfourneaux's official appointment followed on 15 March, with Obrecht became Desfourneaux's first assistant. In total, he performed 190 executions in this position. Over the next three months, Desfourneaux presided over the final three public executions in France:

… excerpt ends here. Continue reading the full article.

Illustrations

Jules-Henri Desfourneaux illustration

Worked examples

Example 1 — a first encounter with Jules-Henri Desfourneaux

Start with the simplest possible case. Write down what Jules-Henri Desfourneaux claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Jules-Henri Desfourneaux before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Jules-Henri Desfourneaux ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Jules-Henri Desfourneaux

In research
Jules-Henri Desfourneaux appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Jules-Henri Desfourneaux in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Jules-Henri Desfourneaux is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1877 births, 1951 deaths, 20th-century French civil servants, so understanding it makes those chapters shorter.
In everyday life
Look for Jules-Henri Desfourneaux outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Jules-Henri Desfourneaux in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Jules-Henri Desfourneaux means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Jules-Henri Desfourneaux out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Jules-Henri Desfourneaux in simple terms?

Jules-Henri Desfourneaux (French pronunciation: [ʒyl ɑ̃ʁi defuʁno]; 17 December 1877 – 1 October 1951) was a French executioner who served as the 5th Monsieur de Paris from 1939 until 1951. He was the last executioner to officiate in public.

Why does Jules-Henri Desfourneaux matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Jules-Henri Desfourneaux?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Jules-Henri Desfourneaux.

Tags

  • 1877 births
  • 1951 deaths
  • 20th-century French civil servants
  • Deaths from heart disease
  • French executioners
  • French expatriates in India
  • French expatriates in the Russian Empire
  • French military personnel of World War I
  • Mechanics (people)
  • People from Bar-le-Duc

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