Katarzyna Ostrogska (1602–1642)

Princess Katarzyna Ostrogska (1602–1642) was a Polish–Lithuanian noble lady. She was the grandmother of King of Poland Michał Korybut Wiśniowiecki.
She was the daughter of voivode of Wołyń Prince Oleksander Ostrogski h. Ostrozky, the son of voivode of Kijów Prince Kostiantyn Vasyl Ostrozky h. Ostrozky and Countess Zofia Tarnowska h. Leliwa and Anna Kostka h. Dąbrowa, the daughter of voivode of Sandomierz and podskarbi Jan Kostka h. Dąbrowa and Elżbieta Elenborg z Eilemberku.

Katarzyna married voivode of Podole and Kijów Chancellor Tomasz Zamoyski h. Jelita, the son of Hetman and Chancellor Jan Zamoyski h. Jelita and Barbara Tarnowska h. Leliwa in 1620 and had three children:

• Jan "Sobiepan" Zamoyski (1627-1665), voivode of Kijów and Sandomierz, married Marie Casimire Louise de La Grange d'Arquien (the later consort to King John III Sobieski)
• Gryzelda Konstancja Zamoyska (1623-1672), married Prince Jeremi Michał Wiśniowiecki h. Korybut, mother of King Michał Korybut Wiśniowiecki
• Joanna Barbara Zamoyska (1626-1653), married Chorąży and voivode of Sandomierz Aleksander Koniecpolski h. Pobóg, son of Hetman Stanislaw Koniecpolski h. Pobóg