Charles d'Eon de Beaumont

Chevalier d'Éon
Portrait of d'Éon by Thomas Stewart (1792), at the National Portrait Gallery
Born	5 October 1728 Tonnerre, France
Died	21 May 1810 (1810-05-22) (aged 81) London, United Kingdom
Resting place	St Pancras Old Church

Charles-Geneviève-Louis-Auguste-André-Timothée d'Éon de Beaumont (5 October 1728 – 21 May 1810), usually known as the Chevalier d'Éon, was a French diplomat, spy, Freemason and soldier who fought in the Seven Years' War. D'Éon had androgynous physical characteristics and natural abilities as a mimic, good features for a spy. D'Éon appeared publicly as a man and pursued masculine occupations for 49 years, although during that time d'Éon successfully infiltrated the court of Empress Elizabeth of Russia by presenting as a woman. For 33 years, from 1777, d'Éon dressed as a woman, identifying as female. Doctors who examined d'Éon's body after death discovered "male organs in every respect perfectly formed", but also feminine characteristics.

D'Éon was born at the Hôtel d'Uzès in Tonnerre, Burgundy, into a poor noble family. D'Éon's father, Louis d'Éon de Beaumont, was an attorney and director of the king's dominions, later mayor of Tonnerre and sub-delegate of the intendant of the généralité of Paris. D'Éon's mother, Françoise de Charanton, was the daughter of a Commissioner General to the armies of the wars of Spain and Italy. Most of what is known about d'Éon's early life comes from a partly ghost-written autobiography, The Interests of the Chevalier d'Éon de Beaumont and Bram Stoker's essay on the Chevalier in his 1910 book Famous Impostors.

D'Éon excelled in school, moving from Tonnerre to Paris in 1743, graduating in civil law and canon law from the Collège Mazarin in 1749 at age 21. D'Éon became secretary to Bertier de Sauvigny, intendant of Paris, served as a secretary to the administrator of the fiscal department, and was appointed a royal censor for history and literature by Malesherbes in 1758.