Stanisław Poniatowski (1754–1833)

For other people of this name, see Stanisław Poniatowski (disambiguation).
His Grace Prince
Stanisław Poniatowski
Grand Treasurer of Lithuania
In office
Monarch Stanisław II Augustus
Preceded by Michał Brzostowski
Succeeded by Ludwik Skumin Tyszkiewicz
Personal details
Born (1754-11-23)November 23, 1754
Warsaw, Polish-Lithuanian Commonwealth
Died February 13, 1833(1833-02-13) (aged 78)
Florence, Italy
Nationality Polish
Spouse(s) Cassandra Luci
Mother Apolonia Ustrzycka
Father Kazimierz Poniatowski

Prince Stanisław Poniatowski (November 23, 1754 – February 13, 1833) was a Polish nobleman, politician, diplomat, a member of the wealthy Poniatowski family and a nephew of the last king of Poland, Stanisław II Augustus.[1] He was the official Commander of the Royal Foot Guards regiment directly responsible for the monarch's life as well as the Grand Treasurer of the Grand Duchy of Lithuania (1784–1791) and Governor of Stryj, which made him a key figure in Poland during the Age of Enlightenment.


Stanisław was the son of Prince Kazimierz Poniatowski (September 15, 1721 – 1800), a Polish nobleman, Deputy Chamberlain of Lithuania (1742–1773), Commander of the Royal Army and a Knight of the prestigious Order of the White Eagle, awarded on August 3, 1744 in Warsaw. His father was the brother of the last King of Poland and Grand Duke of Lithuania, Stanisław II Augustus, who saw in his nephew a possible successor and heir to the throne of the Polish-Lithuanian Commonwealth. Both, Kazimierz and the monarch were born from Konstancja Czartoryska, (January 29, 1700 – October 27, 1759), in-laws of the Polish-Lithuanian Czartoryski philo-Russian family.

Stanisław Poniatowski became the Knight of the Order of the White Eagle on December 8, 1773. Very well educated and particularly interested in the finances and economy of the country, as well as the arts, Poniatowski was not a very popular figure among the nobility, the so-called szlachta, who perceived him as being arrogant and competitive. He commissioned about 2500 engraved precious gems to a group of gem-engravers in Rome who turned to Classical literature for inspiration. In 1830, Poniatowski published a summary catalogue of his gems, Catalogue des Pierres Gravees Antiques de S.A. le Prince Stanislas Poniatowski, which contained elaborate descriptions. His collection was sold after his death at a Christie's auction in 1839 and has been dispersed ever since.[2]

Following the Partitions of Poland, Poniatowski emigrated to Italy, where he lived in Rome, and then in Florence. He is the ancestor of the present members of the Poniatowski family bearing the title of Fürst Poniatowski or Principe Poniatowski di Monterotondo. Some sources state that he married Cassandra Luci (Rome, 1785 - Florence, 1863) in 1806,[3] but apparently that has never occurred as she was married to Vicenzo Venturini Benloch. Among his descendants are the Princes Poniatowski of the Empire of Austria and Counts and the Princes of Monterotondo in the Grand Duchy of Tuscany:


  1. Encyclopædia Britannica, 1911, p. 61
  3. The Nathaniel Hawthorne review, Vol. 22, II, Nathaniel Hawthorne Society, Hawthorne-Longfellow Library, 1996, p. 32
  4. "Poniatowski Family". Retrieved January 12, 2010.
  5. W. L. Hubbard, The American History and Encyclopedia of Music, p. 168


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