Illia Ostrogski
Konstanty Ostrogski's son
Eliasz Aleksander Ostrogski, also known as Illia Ostrogski, was the only son of Konstanty Ostrogski from his first marriage with Tatiana Koretska. He was starost of Bratslav and Vinnytsia. Wikipedia
Born: 1510
Died: August 15, 1539 (age 29 years)
Parents: Konstanty Ostrogski and Tatiana Olshanska
Great-grandparents: Wasyl Ostrogski, Mariia Nesvytska, Semen Nesvitsky, and more
Children: Elizaveta Ostrogska
Spouse: Beata Łaska z Kościeleckich (m. 1539–1539)