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Princess Elżbieta Izabela Czartoryska (1736–1816), better known under her married name Izabela Lubomirska, was a Polish noblewoman.
She was the daughter of August Czartoryski, one of the leaders of the Familia, and Maria Zofia Czartoryska. In her youth she loved her cousin, Stanisław August Poniatowski, later king of Poland, but was unable to marry him due to the objections of her father, who thought him not sufficiently rich or influential. Eventually, she married Stanisław Lubomirski on 9 June 1753, with whom she had four children: Julia, Konstancja, Elżbieta, and Aleksandra.
She was a member of an adoptive Masonic lodge. Because of her liking for blue, which she often wore, she was called the "Blue Marquise".
In the Łańcut estate she founded a distillery which exists today under the name Polmos Łańcut.
- ^ Zamoyski, Adam. The Last King of Poland.
- ^ Małachowski-Łempicki, Stanisław (1930). Wykaz polskich lóż wolnomularskich oraz ich członków w latach 1738-1821. Kraków: Archiwum Komisji Historycznej.