Famous Birthdays·October 5·Chevalière d'Éon
Chevalière d'Éon

FRChevalière d'Éon

An 18th-century spy and diplomat who lived fully as both a man and a woman, becoming a public sensation and challenging rigid gender norms of the era.

1728–1810 (age 82)·French diplomat, spy and soldier·Birthday: October 5

Photo: Thomas Stewart · Public domain

Biography

Born Charles d'Éon de Beaumont in 1728, the Chevalière d'Éon’s life was a masterclass in subterfuge and self-invention. After a solid education, d'Éon joined the secret network of King Louis XV, undertaking a daring mission to the Russian court of Empress Elizabeth by posing as a woman, a persona named Lia de Beaumont. This success was a prelude to a career as a soldier, diplomat, and spy in London, where d'Éon’s gender became a subject of intense public speculation and betting. In 1777, after a legal agreement with the French crown, d'Éon returned to France and lived openly as a woman for the remaining three decades of life, dressing in women's attire by royal command. D'Éon’s very existence became a spectacle that fascinated Europe, forcing a conversation about identity long before modern terminology existed. In later years, financial struggles led to public fencing exhibitions, but d'Éon’s legacy endures as a complex figure whose life story dismantles simplistic notions of gender.

#1 When Chevalière Was Born

The biggest hits of 1728

Chevalière's Life & Times

The world at every milestone

1728Born
1733Started school
1741Became a teenager
1744Could drive
1746Could vote
1749Turned 21
1758Turned 30
1768Turned 40
1778Turned 50
1788Turned 60
1798Turned 70
1808Turned 80
1810Died at 82

Key Achievements

  • Successfully infiltrated the court of Russian Empress Elizabeth by presenting as a woman, securing a crucial diplomatic alliance for France.
  • Served as a captain of dragoons and was wounded in battle during the Seven Years' War.
  • Acted as a plenipotentiary minister and secret agent for King Louis XV in London.
  • Became the subject of widespread legal and public debate about gender, culminating in a royal decree to live as a woman.

Did You Know?

London bookmakers famously took bets on d'Éon’s 'true' sex, a wager that was never officially settled during d'Éon’s lifetime.

Was a skilled fencer and gave popular exhibition matches in England while dressed in women's clothing.

The term 'eonism,' describing male transvestism, was later coined from d'Éon’s name.

After death, an autopsy was performed and the doctor confirmed d'Éon had male anatomical characteristics.

“I have been a man and a woman, and I know both are mere costume.”

— Chevalière d'Éon

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