Maria Zofia Sieniawska

Maria Zofia Czartoryska
Maria Zofia Czartoryska in hunting habit
Spouse(s)	Stanislaw Donhoff August Aleksander Czartoryski
Issue with August Aleksander Czartoryski Elżbieta Czartoryska Adam Kazimierz Czartoryski Stanisław Czartoryski
Noble family	Sieniawski family
Father	Adam Mikołaj Sieniawski
Mother	Elżbieta Lubomirska
Born	15 April 1699
Died	21 May 1771 Warsaw, Poland

Countess Maria Zofia Czartoryska née Sieniawska (1699–1771) was a Polish szlachcianka (noble lady).

She married Stanisław Donhoff in 1724. After her father's death in 1726 Maria Zofia inherited his Ruthenian estates including 35 towns, 235 villages and Berezhany fortress, she was also the only inheritor of her husband's estates and of her mother's fortune. Among the candidates to the hand of one of the wealthiest women in Europe were Charles de Bourbon-Condé, Count of Charolais supported by France (Louis XV even invited Maria Zofia to Versailles), Portuguese infante Dom Manuel de Bragança supported by the Habsburgs (proposed as the next King of Poland, due to the tenets of the Löwenwolde's Treaty),Jan Klemens Branicki, , Jan Tarło and August Aleksander Czartoryski, who eventually won the competition full of duels and speech encounters due to support of Augustus II, as the latter was afraid of increase of power of his opponents. She married August Aleksander Czartoryski on July 17, 1731 in Warsaw.