Kazimierz Poniatowski
Prince Kazimierz Poniatowski was a Polish Szlachcic, podkomorzy wielki koronny, Lieutenant general of the Royal Polish forces, generał wojsk koronnych. Knight of the Order of the White Eagle, awarded on 3 August 1744 in Warsaw.
He was the eldest of eight surviving children of Princess Konstancja Czartoryska and of Count Stanisław Poniatowski, Ciołek coat of arms, Castellan of Kraków. His siblings were:
He was a great-grandson of the poet, courtier and alleged traitor, Jan Andrzej Morsztyn and through his great-grandmother, Catherine Gordon, lady-in-waiting to Queen Marie Louise Gonzaga, he was related to the House of Stuart and thereby connected to the leading families of Scotland, Spain and France. In the 18th-century the Poniatowski family had achieved high rank among the Polish nobility.
He was created Prince by his brother, King Stanisław II August Poniatowski on 4 December 1764. After the First Partition of Poland, he sold off his Podkomorzy title, played no further part in politics and joined the "high life". He was considered a model of a "wastrel".
On 21 January 1751 he married Apollonia Ustrzycka, by whom he had one son and two daughters:
