Prince Konstanty Wiśniowiecki (1564–1641) was a Polish nobleman, voivode of Belz since 1636, of Ruthenia since 1638 and starost of Czerkasy and Kamieniec was a wealthy, powerful and influential magnate, experienced in both politics and warfare.
Several noble families (the Morsztyns, the Wiśniowieckis and the Pacs) lived in the best preserved, western wing, but the castle otherwise remained in ruins.
The fortress quickly grew, and in the 15th or 16th century, it was owned by the powerful Wisniowiecki family.
Some Ruthenian magnates like Sanguszko, Wiśniowiecki and Kisiel, resisted the cultural Polonization for several generations, with the Ostrogski family being one of the most prominent examples.
Gryzelda Konstancja Zamoyska (1623–1672), Polish szlachcianka and mother of King Michał Korybut Wiśniowiecki