Pierre Louis Jean Casimir de Blacas

The Duke of Blacas
France Ambassador
to the Holy See
In office
11 June 1817 – 16 September 1824
Appointed byLouis XVIII
France Ambassador
to the Two Sicilies
In office
8 July 1815 – 11 June 1817
Appointed byLouis XVIII
Chief Minister of France
In office
2 May 1814 – 8 July 1815
MonarchLouis XVIII
Preceded byThe Prince of Talleyrand
Succeeded byOffice abolished and replaced by Prime Minister's office
Minister for the King's Household
In office
4 June 1811 – 8 July 1815
MonarchLouis XVIII
Preceded byThe Duke of Avaray
Succeeded byOffice vacant
Jacques Lauriston (1820)
Personal details
Born(1771-01-20)20 January 1771
Died17 November 1839(1839-11-17) (aged 68)
PartyUltra-royalist
Spouse(s)
Henriette du Bouchet de Sourches, Countess of Montsoreau
(m. 1814⁠–⁠1839)
ChildrenLouis, Duke of Blacas
ProfessionMilitary officer, diplomat, antiquarian
Military service
Branch/service French Royal Army
Years of service1790–1814
RankMaréchal de camp
Second lieutenant
UnitArmy of Condé (1791–1801)
15th Dragoon Regiment (1790–1791)
Battles/wars
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Pierre-Louis Jean Casimir, Count of Blacas d'Aulps (10 January 1771 – 17 November 1839), later created 1st Duke of Blacas (1821), was a French antiquarian, nobleman and diplomat during the Bourbon Restoration.