Career
Kazimierz became Podczaszy of Lithuania since 1699, Grand Treasurer of Lithuania in 1707–1709, nominated by King Stanisław Leszczyński. He was also Deputy Chancellor of Lithuania in 1712–1724. Castellan of Vilnius since 1724 and starost of Krzemieniec, Wieliż and Uświaty.
He founded the "Familia" during the interregnum in 1696–1699.
He supported the candidature of François Louis, Prince of Conti for the Polish throne in 1697. Michał Fryderyk (1696-1775), Duke of Klewań and Żuków
August Aleksander (1697-1782), father of Adam Kazimierz Czartoryski
Konstancja (1700-1759), mother of King Stanisława Augusta Poniatowskiego
Ludwika Elżbieta (1703-1745)
Teodor Kazimierz (1704-1768), bishop of Poznań.