Jacques Hardouin-Mansart de Sagonne
Jacques Hardouin-Mansart de Sagonne (26 July 1711, Paris - 27 September 1778, Paris) was a French architect. He was the illegitimate son of Jacques Hardouin-Mansart, comte de Sagonne, by his mistress Madeleine Duguesny - Jacques and Madeleine married in 1726. Jacques junior's elder brother was the architect Jean Mansart de Jouy (1705-1783), whilst he was also the grandson of Jules Hardouin-Mansart, great-great-great nephew of François Mansart and great-nephew of Robert de Cotte.
Jacques Hardouin-Mansart de Sagonne

Lomita · File:L0998_-_Château_de_Jossigny.jpg · CC BY-SA 4.0
- Nationality
- France.
- Occupation
- architect.
- Known for
- Versailles Cathedral, chateau d'Asnières and château de Jossigny.
- Languages
- French.
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Jacques Hardouin-Mansart de Sagonne (26 July 1711, Paris - 27 September 1778, Paris) was a French architect. He was the illegitimate son of Jacques Hardouin-Mansart, comte de Sagonne, by his mistress Madeleine Duguesny - Jacques and Madeleine married in 1726. Jacques junior's elder brother was the architect Jean Mansart de Jouy (1705-1783), whilst he was also the grandson of Jules Hardouin-Mansart, great-great-great nephew of François Mansart and great-nephew of Robert de Cotte.
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Jacques Hardouin-Mansart de Sagonne was born at Paris. Jacques Hardouin-Mansart de Sagonne died at Paris. Jacques Hardouin-Mansart de Sagonne is recorded as architect.
Composed from admitted, traceable facts · 25 September 2026
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wikidata · Q3159083 · wikipedia · Jacques Hardouin-Mansart de Sagonne
In this article
Works
Works
• Château d'Asnières • Schloss Jägersburg
Life and career
Dated record
Life and career
The full dated record · 2 entries
1711
Jacques Hardouin-Mansart de Sagonne was born on 26 July 1711.
1778
Jacques Hardouin-Mansart de Sagonne died on 27 September 1778.
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Jacques Hardouin-Mansart de Sagonne was born at Paris.
Birthplace
Jacques Hardouin-Mansart de Sagonne died at Paris.
Deathplace
Paris.
Birth place
Primary material
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Institutional database
- Wikidata, structured authority record Q3159083: Jacques Hardouin-Mansart de Sagonne
Scholarly · Wikimedia Foundation
reference work
- “Jacques Hardouin-Mansart de Sagonne”, English Wikipedia, consulted as further reading
Reputable secondary · Wikipedia
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Institutional database
Wikidata, structured authority record Q3159083: Jacques Hardouin-Mansart de SagonneWikimedia Foundation
Institutional witnessreference work
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The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 17 August 2026.
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