Princess Elizaveta Ostrogska, nicknamed Black Princess, was a Ruthenian heiress, the only child of Prince Illia Ostrogski and Beata Kościelecka.
- Citizenship
- Polish–Lithuanian Commonwealth, Poland, Ukraine
- Born
- November 19, 1539, 1539, 1539, November 19, 1539
- Died
- 1582, December 1582